summaryrefslogtreecommitdiffstats
path: root/src/H5Dio.c
Commit message (Collapse)AuthorAgeFilesLines
* [svn-r19093] Description:Quincey Koziol2010-07-191-0/+98
| | | | | | | | | | | | | | | | | | | | Bring r19092 from trunk to 1.8 branch: Bring "shape same" changes from LBL branch to trunk. These changes allow shapes that are the same, but projected into dataspaces with different ranks to be detected correctly, and also contains code to project a dataspace into greater/lesser number of dimensions, so the I/O can proceed in a faster way. These changes also contain several bug fixes and _lots_ of code cleanups to the MPI datatype creation code. Many other misc. code cleanup are included as well... Tested on: FreeBSD/32 6.3 (duty) in debug mode FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode (h5committested on trunk)
* [svn-r18446] Purpose: Fix bug 1637Neil Fortner2010-03-241-1/+1
| | | | | | | | | | Description: Modified algorithm for extending a dataset with early allocation so it only deals with the new chunks. Formerly, it would loop over all chunks, checking to see if each existed in cache and on disk, causing major performance issues with large numbers of chunks. Tested: jam, linew, amani (h5committest)
* [svn-r18032] Description:Quincey Koziol2009-12-171-6/+9
| | | | | | | | | | | | | | | | | Bring r18031 from trunk to 1.8 branch: Bring r18030 from merge_metadata_journaling branch to trunk: Bring "brush clearing" changes (whitespace & style issues, mostly) from metadata_journaling branch to the "merging" branch, to converge the trunk and the metadata_journaling branch. Also, some other minor cleanups along the way. Tested on: FreeBSD/32 6.3 (duty) in debug mode FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode (h5committested on trunk)
* [svn-r17976] Bug fix for 1584. H5Tdetect_class said a VL string is a string ↵Raymond Lu2009-12-091-3/+3
| | | | | | | | | | | type. But when it's in a compound type, it says it's a VL type. We want to tell user a VL string is a string. But internally we treat it as a VL type. I added a flag as a parameter of H5T_detect_class. It tells whether the caller is the public function H5Tdetect_class. I also added a detection for VL string in the private function for the compound case (or array or nested VL type). Tested with h5committest.
* [svn-r17814] Description:Quincey Koziol2009-11-031-1/+1
| | | | | | | Correct 'src' to 'dst' in error message for H5D_read. (Bz#1683) Tested on: Eyeballed only - too minor to require h5committest
* [svn-r17779] Description:Quincey Koziol2009-10-281-2/+2
| | | | | | | | | | Bring r17778 from trunk to 1.8 branch: Make check for NULL dataspace a bit safer. Tested on: FreeBSD/32 6.3 (duty) (too minor for h5committest)
* [svn-r17282] Description:Quincey Koziol2009-07-311-3/+3
| | | | | | | | | | | Bring r17281 from trunk to 1.8 branch: Further refactoring of the dataset layout information, to separate the storage information from the layout info. Tested on: Mac OS X/32 10.5.7 (amazon) debug & production h5committested on trunk
* [svn-r16566] Description:Quincey Koziol2009-03-111-6/+4
| | | | | | | | Bring r16560 back from trunk. Tested on: Mac OS X/32 10.5.6 (amazon) debug & production (Following up with tests on more platforms)
* [svn-r16356] Description:Quincey Koziol2009-01-271-6/+3
| | | | | | | | | | | Bring r16354 back from trunk: Refactor internal layout information, making it easier to add another type of chunk index. Tested on: FreeBSD/32 (duty) (other configurations tested with original change)
* [svn-r16280] Description:Quincey Koziol2009-01-081-3/+3
| | | | | | | | | | | | | | Bring revision 16278 back from revise_chunks branch: Update layout information in DCPL to unify all information in one underlying property and switch to using H5O_layout_t for storing it, which simplifies things considerably. Also, fix many compiler warnings. Tested on: FreeBSD/32 6.3 (duty) in debug mode (Original patch tested on many machines)
* [svn-r15683] Purpose: fix bug 1298Neil Fortner2008-09-221-1/+1
| | | | | | | | | | | Description: The optimized "subset" compound conversion function would improperly copy the "blank" space at the end of compound types. Modified H5T_conv_struct_init to detect when the subset type has extra space at the end, and calculate the size of the data that should be copied into the conversion buffer for each element. Changes to the functions that implement these conversions. Tested: kagiso, linew, smirom (h5committest)
* [svn-r15629] Description:Quincey Koziol2008-09-161-7/+7
| | | | | | | | | | | | | 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-r15610] Description:Quincey Koziol2008-09-101-2/+2
| | | | | | | | | Bring r15609 back from trunk: Omnibus compiler warning cleanup & some formatting happiness. Tested on: Mac OS X/32 10.5.4 (amazon) Too minor to require h5committest
* [svn-r15132] Description:Quincey Koziol2008-06-031-10/+10
| | | | | | | | | | | | | | Bring back revision 15131 from trunk: Finish omnibus chunked dataset I/O refactoring, to separate general actions on chunked datasets from actions that are specific to using the v1 B-tree index. Cleaned up a few bugs and added some additional tests also. Tested on: Mac OS X/32 10.5.3 (amazon) Linux/32 2.4 (chicago)
* [svn-r15038] Description:Quincey Koziol2008-05-191-2/+6
| | | | | | | | | Bring revision 15037 from trunk: Better cleanup of internal structures when no szip encoder. Tested on: Linux/32 2.6 (kagiso) w/szip-no encoder
* [svn-r14861] Description:Quincey Koziol2008-04-241-2838/+379
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Bring revision 14860 back to 1.8 branch, change log for rev 14860 is: Omnibus raw data I/O revisions, with wide-ranging changes and refactoring, in order to prepare for implementing "fast append" feature. These changes remove the majority of the code duplication for raw data I/O which has crept in over the last ten years and introduces a more object- oriented design for operating on different types of dataset storage. Description: Omnibus raw data I/O revisions, with wide-ranging changes and refactoring, in order to prepare for implementing "fast append" feature. These changes remove the majority of the code duplication for raw data I/O which has crept in over the last ten years and introduces a more object- oriented design for operating on different types of dataset storage. Chunked storage no longer has it's own I/O routines, it is now handled as either contiguous (if chunk is not pulled into the cache) or compact (if the chunk is cached in memory). No bug or feature changes, at least intentionally... :-) Tested on: Mac OS X/32 10.5.2 (amazon) w/production
* [svn-r14420] Description:Quincey Koziol2008-01-151-2/+2
| | | | | | | | Correct the prototype for H5Sselect_elements() to take an 'hsize_t *' for the coordinates, instead of 'hsize_t **'. Tested on: Mac OS X/32 10.5.1 (amazon)
* [svn-r14334] Description:Quincey Koziol2007-12-101-71/+117
| | | | | | | | | | | | | | | | | | | | | | | | | - Avoid trying to update 1-D dataset's chunk indices (they can't change) - Cache a copy of a dataspace describing a chunk, when doing single element I/O - Keep a 'chunk info' struct around, for single element I/O - Avoid creating a skip list for chunk infos when performing I/O on single element Also, minor formatting cleanups to testing code Tested on: FreeBSD/32 6.2 (duty) in debug mode FreeBSD/64 6.2 (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/default API=1.6.x, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN, w/szip filter, in production mode Mac OS X/32 10.4.10 (amazon) in debug mode Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode
* [svn-r14326] Description:Quincey Koziol2007-12-061-28/+28
| | | | | | | | | | | | | | | | | | | | | | | | - Keep skip list for tracking chunks with dataset (instead of creating/ destroying it for each I/O operation) and just delete the skip list nodes. - Avoid computations for normalizing selection offset when offset not set. - Avoid updating object modification time twice during dataset creation. - Avoid updating dataset layout message (and object modification time) until dataset is closed. Tested on: FreeBSD/32 6.2 (duty) in debug mode FreeBSD/64 6.2 (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/default API=1.6.x, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN, w/szip filter, in production mode Mac OS X/32 10.4.10 (amazon) in debug mode Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode
* [svn-r14306] Description:Quincey Koziol2007-11-291-48/+48
| | | | | | | | Add call to reset cached chunk info after initialization of chunk data storage. Tested on: Linux/64 2.4(smirom) w/parallel
* [svn-r14295] Description:Quincey Koziol2007-11-271-18/+22
| | | | | | | | | | | | | | | | | | | | | | - Eliminate some redundant calls to retrieve datatype sizes in chunk read/ write routines. - Change indexed storage "common" B-tree callback user data to avoid copying chunk offset and separate "downward" info from "upward" info. - Cache chunk info (nbytes/filter_mask/address) for last chunk accessed Tested on: FreeBSD/32 6.2 (duty) in debug mode FreeBSD/64 6.2 (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/default API=1.6.x, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN, w/szip filter, in production mode Mac OS X/32 10.4.10 (amazon) in debug mode Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode
* [svn-r14278] Description:Quincey Koziol2007-11-201-107/+218
| | | | | | | | | | | | | | | | | | | | - Remember # of elements in file selection, instead of querying more than once - Handle building chunk map for single element as special case Tested on: FreeBSD/32 6.2 (duty) in debug mode FreeBSD/64 6.2 (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/default API=1.6.x, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN, w/szip filter, in production mode Mac OS X/32 10.4.10 (amazon) in debug mode Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode
* [svn-r14271] Description:Quincey Koziol2007-11-201-4/+4
| | | | | | | | | | | | | | | | | | | Avoid copying maximum dimensions for temporary dataspaces used for describing chunks during raw data I/O. Tested on: FreeBSD/32 6.2 (duty) in debug mode FreeBSD/64 6.2 (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/default API=1.6.x, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN, w/szip filter, in production mode Mac OS X/32 10.4.10 (amazon) in debug mode Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode
* [svn-r14250] Description:Quincey Koziol2007-11-101-49/+57
| | | | | | | | | | | | | | | | | | | | | - Changed name of chunk mapping structure from "fm_map" to "H5D_chunk_map_t" - Pushed parallel I/O specific fields into ifdef'ed sections, when building chunk map - Took out most calls to IS_H5FD_MPI macro Tested on: FreeBSD/32 6.2 (duty) in debug mode FreeBSD/64 6.2 (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/default API=1.6.x, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN, w/szip filter, in production mode Mac OS X/32 10.4.10 (amazon) in debug mode Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode
* [svn-r14249] Description:Quincey Koziol2007-11-101-62/+28
| | | | | | | | | | | | | | | | | | | | | - Changed H5S_select_shape_same routine to handle scalar dataspace comparisons correctly. (Added regression tests to verify) - Simplified chunk map creation, now that scalar dataspaces are handled in same way as "simple" dataspaces. Tested on: FreeBSD/32 6.2 (duty) in debug mode FreeBSD/64 6.2 (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/default API=1.6.x, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN, w/szip filter, in production mode Mac OS X/32 10.4.10 (amazon) in debug mode Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode
* [svn-r14203] Description:Quincey Koziol2007-10-111-2/+2
| | | | | | | | | | | | | | | | | | | Break up H5D source file into H5D/H5Dint/H5Ddeprec Attempt fix for "szip noencoder" build failure. Tested on: FreeBSD/32 6.2 (duty) in debug mode FreeBSD/64 6.2 (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/default API=1.6.x, w/C++ & FORTRAN, in production mode Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN, in production mode Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN, w/szip filter, in production mode Mac OS X/32 10.4.10 (amazon) in debug mode
* [svn-r14096] There're 3 changes in this checkin as below:Raymond Lu2007-08-201-0/+24
| | | | | | | | | | | | | | | | | | 1. In H5Dwrite and H5Dread, let the data buffer point to a fake address if the application passes in an empty buffer. This is mainly for MPIO programs that some processes may not have any data to write or read but still participate the I/O. This solution solves some MPI's problem like the ChaMPIon on tungsten which doesn't support empty buffer. 2. The ChaMPIon on tungsten doesn't support complex derived MPI data type correctly and collective I/O when some processes don't have any data to write or read correctly. Detect the compiler "cmpicc" in the system-specific config file and set the variables for these two cases to false. The PHDF5 library already has set up a way to switch collective chunked I/O to independent under these two cases. 3. A bug fix - During the work of the optimization for compound data I/O, the case for switching collective chunked I/O to independent I/O was leftout. Fixed it by adding I/O caching to it in H5D_multi_chunk_collective_io in H5Dmpio.c. Tested on tungsten, cobalt, and kagiso for parallel; on linew and smirom for serial.
* [svn-r14031] Bug fix. Chunk address wasn't passed into some I/O functions ↵Raymond Lu2007-07-311-2/+2
| | | | in H5D_chunk_read and H5D_chunk_write. Tested only on liberty because it's a simple change.
* [svn-r13997] Moved H5D_istore_lock and H5D_istore_unlock from ↵Raymond Lu2007-07-211-15/+138
| | | | | | | | | H5D_istore_writevv and H5D_istore_readvv to H5D_chunk_write and H5D_chunk_read to avoid frequent lock and unlock and to improve some performance. Tested with h5committest on THG machines.
* [svn-r13918] Description:Quincey Koziol2007-06-261-248/+4
| | | | | | | | | | Refactor fill value buffer code into one location, for better long-term maintenance. Tested on: Mac OS X/32 10.4.10 (amazon) Linux/32 2.6 (chicago) Linux/64 2.6 (chicago2)
* [svn-r13885] Modify the comment from the checkin last round.Raymond Lu2007-06-191-6/+6
| | | | No test is needed.
* [svn-r13884] The second step of optimization for compound data for the ChicagoRaymond Lu2007-06-191-42/+321
| | | | | | | | | | | | | | | | | | | | | | | | | | company. The I/O is optimized when the source and destination members are a subset of each other one way or another, and the order is the same, and no conversion is needed. For example: struct source { struct destination { TYPE1 A; --> TYPE1 A; TYPE2 B; --> TYPE2 B; TYPE3 C; --> TYPE3 C; }; TYPE4 D; TYPE5 E; }; or struct destination { struct source { TYPE1 A; --> TYPE1 A; TYPE2 B; --> TYPE2 B; TYPE3 C; --> TYPE3 C; }; TYPE4 D; TYPE5 E; }; The optimization is simply moving data from the source to the appropriate places in the buffer and bypass the reading of the background data and data conversion. Tested on smirom, liberty, sol, and copper.
* [svn-r13870] Description:Quincey Koziol2007-06-151-43/+66
| | | | | | | | | | Fix writing variable-length datatype fill values for contiguous dataset storage Tested on: Mac OS X/32 10.4.9 (amazon) Linux/32 2.6 (chicago) Linux/64 2.6 (chicago2)
* [svn-r13842] Description:Quincey Koziol2007-06-081-2/+3
| | | | | | | | | | | | Fix compact dataset storage to initialize VL datatype fill values correctly. Also, fix bug in global heap code when the fix action on a global heap is to delete an object in a heap with no free space. Tested on: Mac OS X/32 10.4.9 (amazon) FreeBSD/32 6.2 (duty)
* [svn-r13825] Description:Quincey Koziol2007-05-311-7/+15
| | | | | | | | | Incremental step forward in fixing problems with fill values that have a variable-length daattype. This set of changes fixes problems with the copying the property list values. tested Tn: Mac OS X/32 10.4.9 (amazon)
* [svn-r13816] Description:Quincey Koziol2007-05-291-29/+33
| | | | | | | | Fix a few typos and a small memory leak. Tested on: FreeBSD/32 6.2 (duty) Linux/64 2.6 (chicago2)
* [svn-r13534] Description:Quincey Koziol2007-03-211-101/+66
| | | | | | | | Minor code cleanups... Tested on: FreeBSD/32 6.2 (duty) Too minor to require h5committest
* [svn-r13531] When a dataset is created and no data is written, but fill ↵Raymond Lu2007-03-201-21/+77
| | | | | | | | | | | | value is defined, if there's VL type of data in the dataset, the address of the data is copied multiple times into the buffer, causing some trouble when the data is released. Instead, this checkin makes multiple copies of fill value first, then does conversion on each element so that each of them has a copy of the VL data. A test is added, too. Tested it on kagiso, sol, and copper.
* [svn-r13475] There's a configure issue linking szip's shared libraries when ↵Mike McGreevy2007-03-081-2/+2
| | | | | | | | | | | | running on kagiso. The static szip libraries are working as intended, but when shared szip libraries are present and intended for use they cannot be opened. A check has been implemented to test if shared szip libraries are functional on current platform. If they are not, and the user is trying to use them, szip is now disbaled and the user is informed. This issue occurs on kagiso, and the resolution was tested on kagiso.
* [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-r13167] Description:Quincey Koziol2007-01-221-93/+88
| | | | | | | | | | | Get rid of two different types of fill value struct (merge H5O_fill_t and H5O_fill_new_t) and clean up & simplify dataset initialization code. (In preparation for shared object header message method call refactoring). Tested on: FreeBSD/32 6.2 (duty) Mac OS X/32 10.4.8 (amazon)
* [svn-r13068] Ran bin/reconfigure. Some of the scripts have been changed or ↵James Laird2006-12-181-5/+5
| | | | | | | | | haven't been run in a while, so many of the source files were updated with tracing macros, etc. No code changes by me. Tested on kagiso and smirom.
* [svn-r13016] Description:Quincey Koziol2006-12-041-1/+1
| | | | | | | | | | | Finish moving object header message routines into their own source code module, along with renaming them to have "H5O_msg_" prefix... Tested on: Mac OS X/32 10.4.8 (amazon) FreeBSD/32 4.11 (sleipnir) Linux/32 2.4 (heping) AIX/32 5.? (copper)
* [svn-r12844] Description:Quincey Koziol2006-11-021-21/+0
| | | | | | | Fix parallel build failure for property list class initialization refactor. Tested on: AIX (copper) w/parallel
* [svn-r12842] Description:Quincey Koziol2006-11-021-4/+4
| | | | | | | | | | | | | | | | Refactor generic property list initialization code to put property list specific routines in property list modules, instead of scattered to the four winds. Also, introduce property list class initialization objects, to make adding new property list classes in the library easier. Fix daily test failure by using H5Pget_elink_prefix() API routine instead of looking at the "raw" generic property list information. Tested on: Mac OS X/32 10.4.8 (amazon) FreeBSD/32 4.11 (sleipnir) w/threadsafe Linux/32 2.4 (heping) w/C++ & FORTRAN Linux/64 2.4 (mir) w/build-all & 1.6 compat
* [svn-r12700] Alert:Quincey Koziol2006-10-021-240/+237
| | | | | | | | | | | | | | | | | | | | | | | | | | | | File format is not stable, don't keep files produced! Description: First stage of checkins modifying the format of groups to support creation order. Implement "dense" storage for links in groups. Try to clarify some of the symbols for the H5L API. Add the H5Pset_latest_format() flag for FAPLs, to choose to use the newest file format options (including "dense" link storage in groups) Add the H5Pset_track_creation_order() flag for GCPLs, to enable creation order tracking in groups (although no index on creation order yet). Remove --enable-group-revision configure flag, as file format issues are now handled in a backwardly/forwardly compatible way. Clean up lots of compiler warnings and other minor formatting issues. Tested on: FreeBSD/32 4.11 (sleipnir) w/threadsafe Linux/32 2.4 (heping) w/FORTRAN & C++ Linux/64 2.4 (mir) w/enable-v1.6 compa Mac OSX/32 10.4.8 (amazon) AIX 5.3 (copper) w/parallel & FORTRAN
* [svn-r12593] Description:Quincey Koziol2006-08-171-10/+14
| | | | | | | | | Clean up some of the parallel chunk I/O compiler warnings and other minor code rearrangement. Tested on: FreeBSD 4.11 (sleipnir) w/paralllel h5committest
* [svn-r12553] This check-in includes the following part of parallel ↵MuQun Yang2006-08-091-1/+3
| | | | | | | | | | | | | | | optimization codes: 1. Provide another option for users to do independent IO with MPI file setview(collectively) 2. With the request of collective IO from users, using Independent IO with MPI file setview if we find collective IO is not good for the applications for IO per chunk(multi-chunk IO) case. Previously we used pure independent IO and that actually performed small IO(IO each row) for this case. The recent performance study suggested the independent IO with file setview can acheieve significantly better performance than collective IO when not many processes participate in the IO. 3. For applications that explicitly choose to do collective IO per chunk case, the library won't do any optimization(gather/broadcast) operations. The library simply passes the collective IO request to MPI-IO. Tested at copper, kagiso, heping, mir and tungsten(cmpi and mpich) Kagiso is using LAM, t_mpi test was broken even. The cchunk10 test failed at heping and mir. I suspected it was an MPICH problem. Will investigate later. Everything passed at copper. at tungsten: the old cmpi bug(failed at esetw) is still there. Other tests passed. Some sequential fheap tests failed at kagiso.
* [svn-r12474] Quincey Koziol2006-07-151-53/+43
| | | | | | | | Clean up some compiler warnings. Tested on: FreeBSD 4.11 (sleipnir) Too minor to require h5committest
* [svn-r12440] Purpose:Quincey Koziol2006-06-271-10/+10
| | | | | | | | | | | 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
generated by cgit v0.12 at 2024-11-09 08:13:30 (GMT)