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* [svn-r16698] Purpose: Fix bug 503Neil Fortner2009-04-081-2/+1
| | | | | | | | | Description: Changed Skip list package to use a deterministic skip list. This allows the skip list package to avoid calling rand() and srand(), even on machines without rand_r(). There is no longer a p-value or maximum level for skip lists. Tested: jam, smirom, linew (h5committest)
* [svn-r16632] Description:Quincey Koziol2009-03-311-5/+4
| | | | | | | | | | | | | | | | | | | | | | Remove unnecessary 'udata' parameter from H5AC_set() and 'notify' callback (introduced with checkin that added the 'notify' callback) Tested on: FreeBSD/32 6.3 (duty) in debug mode FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode Linux/32 2.6 (jam) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe, in debug mode Linux/64-amd64 2.6 (smirom) w/Intel compilers w/default API=1.6.x, w/C++ & FORTRAN, in production mode Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN, w/szip filter, in production mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode Mac OS X/32 10.5.6 (amazon) in debug mode Mac OS X/32 10.5.6 (amazon) w/C++ & FORTRAN, w/threadsafe, in production mode
* [svn-r16630] Description:Quincey Koziol2009-03-311-1/+43
| | | | | | | | | | | | | | | | | | | | | | | | | Add 'notify' callback to metadata cache clients, so that they can be aware when the cache has taken/will take certain actions. Notifications are urrently limited to when an entry has successfully entered the cache (via an insertion or a load from the file) and when an entry is about to be evicted from the cache. Tested on: FreeBSD/32 6.3 (duty) in debug mode FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode Linux/32 2.6 (jam) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe, in debug mode Linux/64-amd64 2.6 (smirom) w/Intel compilers w/default API=1.6.x, w/C++ & FORTRAN, in production mode Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN, w/szip filter, in production mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode Mac OS X/32 10.5.6 (amazon) in debug mode Mac OS X/32 10.5.6 (amazon) w/C++ & FORTRAN, w/threadsafe, in production mode
* [svn-r16625] Description:Quincey Koziol2009-03-301-4/+16
| | | | | | | | | | | | | | | | | | | | | | Add mechanism for querying if an entry in the metadata cache is the parent or child in a flush dependency relationship. Tested on: FreeBSD/32 6.3 (duty) in debug mode FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode Linux/32 2.6 (jam) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe, in debug mode Linux/64-amd64 2.6 (smirom) w/Intel compilers w/default API=1.6.x, w/C++ & FORTRAN, in production mode Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN, w/szip filter, in production mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode Mac OS X/32 10.5.6 (amazon) in debug mode Mac OS X/32 10.5.6 (amazon) w/C++ & FORTRAN, w/threadsafe, in production mode
* [svn-r16618] Description:Quincey Koziol2009-03-261-80/+152
| | | | | | | | | | | | | | | | | | | | | | Modify metadata cache flush dependency feature to allow it to work with entries that are pinned through the cache API calls. Tested on: FreeBSD/32 6.3 (duty) in debug mode FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode Linux/32 2.6 (jam) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe, in debug mode Linux/64-amd64 2.6 (smirom) w/Intel compilers w/default API=1.6.x, w/C++ & FORTRAN, in production mode Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN, w/szip filter, in production mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode Mac OS X/32 10.5.6 (amazon) in debug mode Mac OS X/32 10.5.6 (amazon) w/C++ & FORTRAN, w/threadsafe, in production mode
* [svn-r16600] Description:Quincey Koziol2009-03-241-457/+527
| | | | | | | | | | | | | | | | | | Ensure that metadata cache entries with flush dependencies are written to the file in the correct order (for serial I/O, at least). Tested on: FreeBSD/32 6.3 (duty) in debug mode FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode Linux/32 2.6 (jam) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe, in debug mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode Mac OS X/32 10.5.6 (amazon) in debug mode Mac OS X/32 10.5.6 (amazon) w/C++ & FORTRAN, w/threadsafe, in production mode
* [svn-r16587] Description:Quincey Koziol2009-03-171-49/+361
| | | | | | | | | | | | | | | | | | | | Add infrastructure & tests for "flush dependencies" in metadata cache, which allow relationships that specify which order to flush metadata entries in. Tested on: FreeBSD/32 6.3 (duty) in debug mode FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode Linux/32 2.6 (jam) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe, in debug mode Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN, w/szip filter, in production mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode Mac OS X/32 10.5.6 (amazon) in debug mode Mac OS X/32 10.5.6 (amazon) w/C++ & FORTRAN, w/threadsafe, in production mode
* [svn-r16560] Description:Quincey Koziol2009-03-101-6/+0
| | | | | | | | | | Remove another call to H5E_clear_stack() from within the library. Clean up lots of compiler warnings. Tested on: Mac OS X/32 10.5.6 (amazon) (followup on other platforms forthcoming)
* [svn-r16324] Purpose:Mike McGreevy2009-01-151-102/+77
| | | | | | | | | | | | | | | Code Cleanup Description: - Pulled out repetitive cache stats code into its own new macro. - Converted HDasserts in cache stats macros to if / HGOTO_ERROR statments in order to keep code consistent. Tested: jam, smirom, liberty
* [svn-r16290] Purpose: Mike McGreevy2009-01-091-185/+634
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adding code to maintain a min_clean_fraction in the cache in serial mode. Description: The metadata cache now has the ability to maintain a min_clean_fraction when in serial mode. The default initial cache size has been changed from 1MB to 2MB, and the default min_clean_fraction has been set at 30%. This check-in includes modifications to H5C.c to support maintaining a min_clean_size, including the addition of clean_index_size and dirty_index_size trackers, modifications to the H5C_make_space_in_cache algorithm, as well as associated test code and additional statistics tracking variables. Maintaining the min_clean_fraction addresses the possibility of experiencing a "metadata blizzard" when the cache gets completely full with dirty entries. Upon having to make space, the cache would previously need to flush every single entry in the cache before coming across a clean entry which could be evicted. This resulted in unnecessary flushing of oftentimes hot entries in the cache. Maintaining the min_clean_fraction ensures that, when space is needed, clean entries are more readily available to evict. Tested: jam, smirom, linew (h5committest)
* [svn-r15800] Description:Quincey Koziol2008-10-071-11/+71
| | | | | | | | | | | | | | | | | | | | | | | Bring file free space branch changes through r15795 into trunk, which includes a fair bit of code cleanup & rearrangement along with a couple of bug fixes also. Tested on: Mac OS X/32 10.5.5 (amazon) in debug mode Mac OS X/32 10.5.5 (amazon) w/C++ & FORTRAN, w/threadsafe, in production mode FreeBSD/32 6.3 (duty) in debug mode FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode Linux/32 2.6 (kagiso) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe, in debug mode Linux/64-amd64 2.6 (smirom) w/Intel compilers w/default API=1.6.x, w/C++ & FORTRAN, in production mode Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN, w/szip filter, in production mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode
* [svn-r15628] Description:Quincey Koziol2008-09-161-167/+167
| | | | | | | | | | | | | Remove trailing whitespace from C/C++ source files, with the following script: foreach f (*.[ch] *.cpp) sed 's/[[:blank:]]*$//' $f > sed.out && mv sed.out $f end Tested on: Mac OS X/32 10.5.5 (amazon) No need for h5committest, just whitespace changes...
* [svn-r15510] Description:Quincey Koziol2008-08-211-3/+3
| | | | | | | | Clean up warnings & formatting Tested on: Mac OS X/32 10.5.4 (amazon) More tests forthcoming
* [svn-r14458] Fixed coredump under production 64-bit solaris.John Mainzer2008-01-251-13/+30
| | | | | | | | | | | | | | | | As best I can tell, H5C_make_space_in_cache() was accessing memory that had been deallocated -- however the bug was easy to mask, and jumped around even in different runs of the same executable. While I was never able to generate a definitive test case that exposed exactly where the core dump occured, I was able to generate print statement traces which made it clear that I was accessing freed memory. In any case, reworking the code to avoid the reference to freed cache entries seems to have fixed the problem. Tested serial production on Phoenix, and commit tested. Also, partial tests Linew.
* [svn-r14450] Fixed metadata cache performance bug introduced while adding ↵John Mainzer2008-01-231-11/+12
| | | | | | | | | | | code to detect and handle the case in which the skip list or LRU is modified out from under a scan of same by the flush callback of the entry under consideration. Test serial debug, serial production, and parallel debug on phoenix, and commit tested.
* [svn-r14445] Added code to detect the situation in which a metadata cache ↵John Mainzer2008-01-201-35/+501
| | | | | | | | | | | | | | entry flush callback functions modifies the skip list or LRU out from under a partial or complete flush of the cache. This is a test for a situation that should not occur, but we test anyway. Also added code to skip longer tests in cache_api in express tests. Tested serial and parallel on phoenix (debian --x86-32), and commit test. Elena commit tested as well, and ran a manual test under MacOS X.
* [svn-r14442] Modified metadata cache to adapt more quickly to the insertion of aJohn Mainzer2008-01-181-10/+443
| | | | | | | | | | | | | | | | | large entry, or to a large increases in the size of an existing entry. This required some additions to the cache configuration structure, and thus will require changes in the metadata cache documentation. The basic idea is to monitor the size of entries as they are loaded, inserted, or increased in size. If the size of the entry (or increase) exceeds some user selected fraction of the size of the cache, increase the size of the cache. Note that this fix was designed quickly -- while it deals with the use case that exposed the problem, we may have to revisit the issue later. Tested serial and parallel on Phoenix, and h5committest.
* [svn-r14064] Implemented function allowing the user to cork the metadata cache.John Mainzer2007-08-101-8/+132
| | | | Also implemented associated test code.
* [svn-r13690] Description:Quincey Koziol2007-04-191-13/+1
| | | | | | | | | | | | | Fully enable readers/writer locking in metadata cache and correct errors in cache clients which were modifying a cache entry while only holding a read lock on it. Tested on: Mac OS X/32 10.4.9 (amazon) Linux/32 2.6 (chicago) Linux/64 2.6 (chicago2) FreeBSD/32 6.2 (duty) FreeBSD/64 6.2 (liberty)
* [svn-r13618] Modified metadata cache to support multiple read only protects of John Mainzer2007-04-091-213/+501
| | | | | | | | | | cache entries. Added test code to test the new feature. Also some minor cleanum h5committested -- passed on copper and sol. Failed on osage with a configuration error that appears unrelated to my changes. Serial test (debug mode) passes on Phoenix (Linux x86 2.6 kernel), so I went ahead with the checkin.
* [svn-r13323] Fixed unused parameter warnings in H5C.cJohn Mainzer2007-02-161-2/+24
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* [svn-r13253] Updated all C and C++ style source code files with the THG ↵Albert Cheng2007-02-071-2/+3
| | | | | | | | | copyright notice. Tested platform: Kagiso only since it is only a comment block change. If it works in one machine, it should work in all, I hope. Still need to check the parallel build on copper.
* [svn-r12774] Modified flush code in the metadata cache to allow it toJohn Mainzer2006-10-181-148/+813
| | | | | | | | | | | | | | | | | handle flush callbacks which can dirty other entries, and resize and/or rename the target entry. This feature is needed by the fractal heap code. Also added associated test code. H5Commit tested. Test failed on heping, but the error appears to be a syntax error in an un-related file. Tests on copper & sol passed, along with tests on phoenix.
* [svn-r12706] Description:Quincey Koziol2006-10-021-1/+1
| | | | | | | | | Clean up some of the warnings on 64-bit Linux... Tested on: Linux/32 2.6 (chicago) Linux/64 2.6 (chicago2) Too minor to require h5committest
* [svn-r12595] Modified H5C_insert_entry() to accept the H5C__PIN_ENTRY_FLAG entryJohn Mainzer2006-08-171-61/+131
| | | | | | | | | | | flag, and pin an entry as it is inserted. The objective is to avoid some function call overhead in fheap. Also added matching test code in test/cache.c & test/cache_common.c (also testpar/t_cache.c checked in separately by accident) h5commit tested
* [svn-r12462] Committed a variety of metadata cache related changes:John Mainzer2006-07-131-8/+375
| | | | | | | | | | | | | | | | | | | | | | 1) Added trace file support to the metadata cache. This allows capture of all metadata cache calls in trace files for purposes of optimization and debuging. 2) Added an expunge entry function. This allows an entry to be deleteded from the cache without writing it to disk even if it is dirty. 3) Added a function call to resize pinned entries. 4) Added code to deal with entries that are dirty on load. This is needed in support of a bug fix which can alter object headers on load to repair files. 5) Added progress reporting code to the "MDC API smoke check" test in cache_api.c. To enable the progress reporting, set report_progress to TRUE in mdc_api_call_smoke_check(). Tested with h5committest, and a parallel test on phoenix (dual athelon linux box).
* [svn-r12440] Purpose:Quincey Koziol2006-06-271-153/+153
| | | | | | | | | | | Code cleanup Description: Trim trailing whitespace in Makefile.am and C/C++ source files to make diffing changes easier. Platforms tested: None necessary, whitespace only change
* [svn-r12374] Purpose:John Mainzer2006-05-241-0/+97
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) Check in potential fix to unreproduceable bug in t_cache observed on Cobalt 2) Check in code supporting added pinned entry features in the metadata cache. Description: 1) Elena encountered a bug in t_cache when running on Cobalt. On investigation I found a potential race condition in t_cache that could explain her observation. 2) Quincey requested additions to the metadata cache allowing renaming of pinned entryies, and marking of pinned or protected entries as dirty. Solution: 1) Modified t_cache.c to prevent the potential race condition. Elena was unable to reproduce the bug on Cobalt, so we don't know if my fix actually addressed the problem. 2) Added code supporting the requested functions. The changes were relatively trivial, but required substantial new test code. Platforms tested: h5committest, serial test on heping, parallel test on phoenix. Misc. update:
* [svn-r12311] Purpose:John Mainzer2006-04-281-372/+1277
| | | | | | | | | | | | | | | | | | | | | | | | | Add pinned entry capability to cache. Description: For frequently accessed cache entries, the protect/unprotect overhead is sometimes a bottleneck. Solution: Allow entries to be pinned in the cache. Pinned entries can't be evicted, but can be flushed or modified. Platforms tested: h5committested -- minus one small typo in test/cache.c whose fix was tested on copper and heping only. Misc. update:
* [svn-r12292] Purpose:Quincey Koziol2006-04-201-1/+1
| | | | | | | | | | | | | Code maintenance Description: Remove flexible parallel code Platforms tested: FreeBSD 4.11 (sleipnir) Linux 2.4 (heping) Solaris 2.9 (shanti) Linux 2.4/64 (mir)
* [svn-r11897] Purpose:John Mainzer2006-01-271-77/+580
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) Add parallel test for metadata cache 2) Split serial test for metadata cache into two parts 3) Fix bug in which cache was flushed needlessly when the cache wasn't full. 4) Performance improvements 5) Update API for parallel cache coherency bug fix. Description: See above. Solution: See above. Platforms tested: h5committest Misc. update:
* [svn-r11470] Purpose:John Mainzer2005-09-271-25/+1028
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Repair synchronization bug in the metadata cache in PHDF5 Also repair numerous other bugs that surfaced in testing the bug fix. Description: While operations modifying metadata must be collective, we allow independant reads. This allows metadata caches on different processes to adjust to different sizes, and to place the entries on their dirty lists in different orders. Since only process 0 actually writes metadata to disk (all other processes thought they did, but the writes were discarded on the theory that they had to be collective), this made it possible for another process to modify metadata, flush it, and then read it back in in its original form (pre-modification) form. The possibilities for file corruption should be obvious. Solution: Make the policy that only process 0 can write to file explicit, and visible to the metadata caches. Thus only process 0 may flush dirty entries -- all other caches must retain dirty entries until they are informed by process 0 that the entries are clean. Synchronization is handled by counting the bytes of dirty cache entries created, and then synching up between the caches whenever the sum exceeds an (eventually user specified) limit. Dirty metadata creation is consistent across all processes because all operations modifying metadata must be collective. This change uncovered may bugs which are repaired in this checkin. It also required modification of H5HL and H5O to allocate file space on insertion rather than on flush from cache. Platforms tested: H5committest, heping(parallel & serial) Misc. update:
* [svn-r11245] Purpose:Quincey Koziol2005-08-131-447/+447
| | | | | | | | | | | | | | | | | | | | Code cleanup Description: Trim trailing whitespace, which is making 'diff'ing the two branches difficult. Solution: Ran this script in each directory: foreach f (*.[ch] *.cpp) sed 's/[[:blank:]]*$//' $f > sed.out && mv sed.out $f end Platforms tested: FreeBSD 4.11 (sleipnir) Too minor to require h5committest
* [svn-r11014] Purpose:Quincey Koziol2005-07-021-2/+1
| | | | | | | | | | | | Code cleanup Description: Refactor metadata cache to merge "dirtied" flag in with other flags for H5AC_unprotect and H5C_unprotect. Platforms tested: FreeBSD 4.11 (sleipnir) h5committest
* [svn-r10978] Purpose:John Mainzer2005-06-241-82/+233
| | | | | | | | | | | | | | | | | | | | | | | | | | | Interim checkin of code changes moving management of the is_dirty flag into the cache code. Description: Prior to this checkin, management of the is_dirty flag was handled above the level of the metadata cache. This can no longer be allowed, as it introduces a race condition in the proposed fix for a cache coherency bug in PHDF5. Solution: Move management fo the is_dirty flag to the cache code proper. Entries are now marked as dirty via a flag on the unprotect call. Platforms tested: h5committested Misc. update:
* [svn-r10736] Purpose:Quincey Koziol2005-05-071-1/+1
| | | | | | | | | | | Code cleanup Description: Clean up some compiler warnings Platforms tested: FreeBSD 4.11 (sleipnir) h5committest
* [svn-r10705] Purpose:Quincey Koziol2005-04-301-5/+0
| | | | | | | | | | | Code cleanup Description: Clean up a few compiler warnings of various sorts... Platforms tested: FreeBSD 4.11 (sleipnir) Too minor to require h5committest
* [svn-r10688] Purpose:John Mainzer2005-04-281-148/+322
| | | | | | | | | | | | | | | | | | | | | | | | | | Add API calls allowing user control of the metadata cache. Description: Prior to this update, the metadata cache was not configurable from outside the library. Solution: Add API calls allowing the user to configure the metadata cache either at file open time, or for any open file. Also added calls permitting the user to monitor cache size and hit rate. These latter facilities are needed for "manual" cache size control Platforms tested: h5committested Misc. update:
* [svn-r9857] Purpose: MaintenanceElena Pourmal2005-01-221-3/+0
| | | | | | | | | | | | | | Description: Removed PABLO from the source Solution: Platforms tested: arabica with 64-bit, copper with parallel, heping with GNU C and C++ and PGI fortran (but I disabled hl, there is some weird problem only on heping: F9XMODFLAG is not propagated to the Makefile files Misc. update:
* [svn-r9850] Purpose:John Mainzer2005-01-201-50/+162
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) Provide facilities in cache to allow us to avoid a potential cache consistency bug in the parallel case. 2) Clean up a off by one sanity checking bug. 3) Turn off execution of long running tests in debug mode. Description: 1) In the parallel case, all writes to metadata must be collective, but reads may not be. In pricipal, this allows us to different contents in different caches. This isn't a problem as long as the correct data is always on disk, but unless we can force certain writes immediately, that need not be the case. 2) & 3) should need no further explanation. Solution: 1) Add code allowing us to mark cache entries, and then force these entries to be flushed at a later time. Note that to actually avoid the bug, we will have to modify existing code to use these new features. 2) & 3) should need no further explanation. Platforms tested: heping (serial debug and production) committest (copper, sol, and heping). test failed on heping in the c++ portion of the build, but at Quincey's siggestion, I am proceeding with the checkin. Misc. update:
* [svn-r9727] Purpose:Quincey Koziol2004-12-291-10/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bug Fix/Code Cleanup/Doc Cleanup/Optimization/Branch Sync :-) Description: Generally speaking, this is the "signed->unsigned" change to selections. However, in the process of merging code back, things got stickier and stickier until I ended up doing a big "sync the two branches up" operation. So... I brought back all the "infrastructure" fixes from the development branch to the release branch (which I think were actually making some improvement in performance) as well as fixed several bugs which had been fixed in one branch, but not the other. I've also tagged the repository before making this checkin with the label "before_signed_unsigned_changes". Platforms tested: FreeBSD 4.10 (sleipnir) w/parallel & fphdf5 FreeBSD 4.10 (sleipnir) w/threadsafe FreeBSD 4.10 (sleipnir) w/backward compatibility Solaris 2.7 (arabica) w/"purify options" Solaris 2.8 (sol) w/FORTRAN & C++ AIX 5.x (copper) w/parallel & FORTRAN IRIX64 6.5 (modi4) w/FORTRAN Linux 2.4 (heping) w/FORTRAN & C++ Misc. update:
* [svn-r9700] Purpose:John Mainzer2004-12-221-1/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a bug in the cache caused by a slightly over active sanity check. Description: When the #define H5C_DO_SANITY_CHECKS is TRUE, the macro H5C__DLL_PRE_INSERT_SC is executed prior to inserting an entry in the LRU list. The macro performs a variety of sanity checks, and flags an error if any of the checks fail. Prior to this update, the macro used to check to see if the target list had length 1 and size <= 0. The new epoch marker entries used in the age out cache size reduction algorithm have size zero -- making it possible for this sanity check to fail incorrectly. Note that cache sanity checks are disabled in the CVS version of the code, so this bug and bug fix should be invisible unless you are working with the cache, and turn the sanity checks on. Solution: Removed the offending clause in H5C__DLL_PRE_INSERT_SC. Since the size used in the macro is typically a size_t and thus cannot have negative value, there was no point in changing it to "size < 0". Platforms tested: Ran a serial test on heping. Under the circumstances, I didn't feel the need for further testing. Misc. update:
* [svn-r9687] Purpose:John Mainzer2004-12-181-722/+2417
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Modify the cache code (H5C) to support automatic cache resizing to adapt to the work load at run time. Description: Different applications require different sized caches to maintain an acceptable hit rate. This set of changes attempts to provide the ability to adjust to circumstances automatically. Solution: Added highly configurable code to allow the user to either set a fixed cache size, or allow the cache to grow and shrink according to conditions. If enabled, cache size increases are triggered when the hit rate drops below a user specified threshold in a user specified interval. Cache size reductions (if enabled) are triggered when either the hit rate exceeds some user specified threshold over a user specified interval, when the cache contains "enough" entries that haven't been accessed for a user specified interval, or some mix of the above. See the header comments on the H5C_auto_size_ctl_t structure in H5Cprivate.h for further details. At present, the cache resize configuration options are not accessible via the user API. Must add this. Platforms tested: h5committested, heping (serial), and copper (parallel) Misc. update:
* [svn-r9598] Purpose:Quincey Koziol2004-11-291-8/+2
| | | | | | | | | | | | | New internal feature Description: Add a "release" routine to the skip lists, which releases all the nodes in the skip list, but keeps the skip list active. Platforms tested: FreeBSD 4.10 (sleipnir) Linux 2.4 (verbena) Too minor to require h5committest
* [svn-r9596] Purpose:Quincey Koziol2004-11-291-200/+155
| | | | | | | | | | | | | Code optimization Description: Retarget metadata cache code from using TBBT routines to using new skiplist routines, for a reasonable speedup (when dealing with dirty metadata) Platforms tested: FreeBSD 4.10 (sleipnir) w/parallel Solaris 2.7 (arabica) Too minor to require h5committest
* [svn-r9022] Purpose: Optimization of the cache code in H5C.John Mainzer2004-08-051-938/+1663
| | | | | | | | | | | | | | | | | | | | | | | Description: Cache was running too slowly. Solution: Added a hash table for indexing. Retained the tree, but only for dirty entries. As we need to flush dirty entries in increasing address order, this is sufficient. Updated statistics collection code for the above. Converted a number of local functions into macros to avoid the function call overhead. Added code to disable the clean and dirty LRU lists in serial mode. Updated test code to account for the above changes. Platforms tested: h5committested + serial, parallel, and fp on Eirene. Misc. update:
* [svn-r8800] Purpose:Quincey Koziol2004-07-031-127/+95
| | | | | | | | | | | | | Code cleanup Description: Fix problems when compiling with C++ compiler. Also clean up some warnings with gcc 3.4.x Platforms tested: FreeBSD 4.10 (sleipnir) Too minor to require h5committest
* [svn-r8791] Purpose: Rewrote metadata cache (H5AC.c, etc.) to improve ↵John Mainzer2004-07-021-0/+3490
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | performance. Description: Replaced the old metadata cache with a cache with a modified LRU replacement policy. This should improve the hit rate. Solution: Since we want to flush cache entries in increasing address order, I used the threaded binary B-tree code to store the cache entries. There is a fair bit of overhead here, so we may want to consider other options. While the code is designed to allow the support of other replacement algorithms, at present, only a modified version of LRU is supported. The modified LRU algorithm requires that a user selectable portion of the cache entries be clean. The clean entries are evicted first when writes are not permitted. If the pool of clean entries is used up, the cache grows beyond its user specified maximum size. The cache can also exceed its maximum size if the combined size of the protected (or locked) entries exceeds the maximum size of the cache. Platforms tested: eirene (serial, parallel, fp), h5committested Misc. update:
* [svn-r300] ./MANIFESTRobb Matzke1998-02-261-1392/+0
| | | | | | | Changed names for P->S and C->P changes. ./INSTALL Added a note.
* [svn-r298] Changes since 19980219Robb Matzke1998-02-251-0/+1392
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ---------------------- ./html/Files.html ./src/H5C.c ./src/H5Cpublic.h ./src/H5Ffamily.c ./src/H5Fprivate.h ./src/H5Fsplit.c ./test/tstab.c Added file-access property functions. The split driver takes file extensions as properties. ./src/H5A.c ./src/H5Aprivate.h Added some comments. Changed H5A_destroy() to call the free function on all the atoms that are destroyed. This fixes a bug where the file boot block isn't updated if the file isn't closed before calling exit(). Removed extra `*' and `&' from some places. ./src/H5AC.c Replaced an occurrence of NO_ADDR with NULL. ./src/H5Odtype.c ./src/H5T.c ./src/H5Tconv.c ./src/H5Tpkg.h Data types of compound members are pointers. ./H5private.h Some changes to make lseek64() work on Irix 5.3 where header files don't realize that `long long' works. ./acconfig.h ./configure.in Removed definition for PHDF5 since it looks like everyone is useing HAVE_PARALLEL now. ./configure.in ./src/H5detec.c Added checks for gethostname() and getpwuid().
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