diff options
Diffstat (limited to 'src/H5Smpio.c')
| -rw-r--r-- | src/H5Smpio.c | 177 |
1 files changed, 165 insertions, 12 deletions
diff --git a/src/H5Smpio.c b/src/H5Smpio.c index 0207080..5701b9c 100644 --- a/src/H5Smpio.c +++ b/src/H5Smpio.c @@ -23,6 +23,7 @@ #define H5F_PACKAGE /*suppress error about including H5Fpkg */ #define H5S_PACKAGE /*suppress error about including H5Spkg */ +#define H5D_PACKAGE /* Pablo information */ /* (Put before include files to avoid problems with inline functions) */ @@ -31,11 +32,15 @@ #include "H5private.h" /* Generic Functions */ #include "H5Eprivate.h" /* Error handling */ #include "H5Fpkg.h" /* Files */ +#include "H5Dpkg.h" #include "H5FDprivate.h" /* File drivers */ #include "H5Iprivate.h" /* IDs */ #include "H5Pprivate.h" /* Property lists */ #include "H5Spkg.h" /* Dataspaces */ +#include "H5Oprivate.h" +#include "H5Dprivate.h" + #ifdef H5_HAVE_PARALLEL static herr_t @@ -69,7 +74,9 @@ H5S_mpio_space_type( const H5S_t *space, size_t elmt_size, static herr_t H5S_mpio_spaces_xfer(H5F_t *f, const H5D_t *dset, size_t elmt_size, const H5S_t *file_space, const H5S_t *mem_space, - hid_t dxpl_id, void *buf/*out*/, hbool_t do_write); + hid_t dxpl_id, void *buf/*out*/, + const H5D_storage_t *store, + hbool_t do_write); /*------------------------------------------------------------------------- @@ -628,7 +635,8 @@ done: static herr_t H5S_mpio_spaces_xfer(H5F_t *f, const H5D_t *dset, size_t elmt_size, const H5S_t *file_space, const H5S_t *mem_space, - hid_t dxpl_id, void *_buf /*out*/, + hid_t dxpl_id, void *_buf /*out*/, + const H5D_storage_t *store, hbool_t do_write ) { haddr_t addr; /* Address of dataset (or selection) within file */ @@ -642,6 +650,9 @@ H5S_mpio_spaces_xfer(H5F_t *f, const H5D_t *dset, size_t elmt_size, int mpi_code; /* MPI return code */ herr_t ret_value = SUCCEED; /* Return value */ + haddr_t chunk_addr; /* for collective chunk IO */ + + FUNC_ENTER_NOAPI_NOINIT(H5S_mpio_spaces_xfer); /* Check args */ @@ -672,7 +683,17 @@ H5S_mpio_spaces_xfer(H5F_t *f, const H5D_t *dset, size_t elmt_size, &mft_is_derived )<0) HGOTO_ERROR(H5E_DATASPACE, H5E_BADTYPE, FAIL,"couldn't create MPI file type"); - addr = H5D_contig_get_addr(dset) + mpi_file_offset; + +/* Adding comments for chunk collective IO */ + if(dset->layout.type == H5D_CONTIGUOUS) { + addr = H5D_contig_get_addr(dset) + mpi_file_offset; + } + else { + assert(dset->layout.type == H5D_CHUNKED); + chunk_addr=H5D_istore_get_addr(f,dxpl_id,&(dset->layout),store->chunk.offset,NULL); + addr = f->shared->base_addr + chunk_addr + mpi_file_offset; + } + #ifdef H5Smpi_DEBUG HDfprintf(stderr, "spaces_xfer: relative addr=%a\n", addr ); #endif @@ -740,7 +761,7 @@ done: */ herr_t H5S_mpio_spaces_read(H5F_t *f, const H5D_dxpl_cache_t UNUSED *dxpl_cache, hid_t dxpl_id, - H5D_t *dset, const H5D_storage_t UNUSED *store, + H5D_t *dset, const H5D_storage_t *store, size_t UNUSED nelmts, size_t elmt_size, const H5S_t *file_space, const H5S_t *mem_space, void *buf/*out*/) @@ -750,7 +771,7 @@ H5S_mpio_spaces_read(H5F_t *f, const H5D_dxpl_cache_t UNUSED *dxpl_cache, hid_t FUNC_ENTER_NOAPI_NOFUNC(H5S_mpio_spaces_read); ret_value = H5S_mpio_spaces_xfer(f, dset, elmt_size, file_space, - mem_space, dxpl_id, buf, 0/*read*/); + mem_space, dxpl_id, buf,store, 0/*read*/); FUNC_LEAVE_NOAPI(ret_value); } /* end H5S_mpio_spaces_read() */ @@ -778,7 +799,7 @@ H5S_mpio_spaces_read(H5F_t *f, const H5D_dxpl_cache_t UNUSED *dxpl_cache, hid_t */ herr_t H5S_mpio_spaces_write(H5F_t *f, const H5D_dxpl_cache_t UNUSED *dxpl_cache, hid_t dxpl_id, - H5D_t *dset, const H5D_storage_t UNUSED *store, + H5D_t *dset, const H5D_storage_t *store, size_t UNUSED nelmts, size_t elmt_size, const H5S_t *file_space, const H5S_t *mem_space, const void *buf) @@ -789,7 +810,7 @@ H5S_mpio_spaces_write(H5F_t *f, const H5D_dxpl_cache_t UNUSED *dxpl_cache, hid_t /*OKAY: CAST DISCARDS CONST QUALIFIER*/ ret_value = H5S_mpio_spaces_xfer(f, dset, elmt_size, file_space, - mem_space, dxpl_id, (void*)buf, 1/*write*/); + mem_space, dxpl_id, (void*)buf, store,1/*write*/); FUNC_LEAVE_NOAPI(ret_value); } /* end H5S_mpio_spaces_write() */ @@ -812,10 +833,21 @@ H5S_mpio_spaces_write(H5F_t *f, const H5D_dxpl_cache_t UNUSED *dxpl_cache, hid_t *------------------------------------------------------------------------- */ htri_t -H5S_mpio_opt_possible( const H5S_t *mem_space, const H5S_t *file_space, const unsigned flags) +H5S_mpio_opt_possible( const H5F_t *file, const H5S_t *mem_space, const H5S_t *file_space, const unsigned flags,const H5O_layout_t *layout) { htri_t c1,c2; /* Flags whether a selection is optimizable */ htri_t ret_value=TRUE; + hsize_t chunk_dim[H5S_MAX_RANK+1]; + hssize_t startf[H5S_MAX_RANK],endf[H5S_MAX_RANK],startm[H5S_MAX_RANK],endm[H5S_MAX_RANK]; + int fnum_chunk[H5S_MAX_RANK],mnum_chunk[H5S_MAX_RANK]; + int rank,i,dim_rankm,dim_rankf; + int pcheck_hyper,check_hyper,check_num_chunkm,check_num_chunkf; + int tnum_chunkf,manum_chunkf,minum_chunkf; + int tnum_chunkm,manum_chunkm,minum_chunkm; + H5S_sel_type fsel_type,msel_type; + MPI_Comm comm; + + FUNC_ENTER_NOAPI(H5S_mpio_opt_possible, FAIL); @@ -823,11 +855,34 @@ H5S_mpio_opt_possible( const H5S_t *mem_space, const H5S_t *file_space, const un assert(mem_space); assert(file_space); + /* Parallel I/O conversion flag must be set, if it is not collective IO, go to false. */ + if(!(flags&H5S_CONV_PAR_IO_POSSIBLE)) + HGOTO_DONE(FALSE); + + /*getting MPI communicator and rank */ + + comm = H5F_mpi_get_comm(file); + rank = H5F_mpi_get_rank(file); + +#if 0 + for (i =0;i<H5S_MAX_RANK;i++){ + chunk_dim[i] = 1; + startf[i] = 1; + endf[i] = 1; + startm[i] = 1; + endm[i] = 1; + fnum_chunk[i] = 1; + mnum_chunk[i] = 1; + } +#endif + /* Check whether these are both simple or scalar dataspaces */ if (!((H5S_SIMPLE==H5S_GET_EXTENT_TYPE(mem_space) || H5S_SCALAR==H5S_GET_EXTENT_TYPE(mem_space)) && (H5S_SIMPLE==H5S_GET_EXTENT_TYPE(file_space) || H5S_SCALAR==H5S_GET_EXTENT_TYPE(file_space)))) HGOTO_DONE(FALSE); + + /* Check whether both selections are "regular" */ c1=H5S_SELECT_IS_REGULAR(file_space); c2=H5S_SELECT_IS_REGULAR(mem_space); @@ -840,14 +895,112 @@ H5S_mpio_opt_possible( const H5S_t *mem_space, const H5S_t *file_space, const un if (H5S_SEL_POINTS==H5S_GET_SELECT_TYPE(mem_space) || H5S_SEL_POINTS==H5S_GET_SELECT_TYPE(file_space)) HGOTO_DONE(FALSE); - /* Dataset storage must be contiguous currently */ - if ((flags&H5S_CONV_STORAGE_MASK)!=H5S_CONV_STORAGE_CONTIGUOUS) + +/* Dataset storage must be contiguous or special chunk storage */ + /* KMY Adding conditions for chunk storage */ + if ((flags&H5S_CONV_STORAGE_MASK)!=H5S_CONV_STORAGE_CONTIGUOUS && + (flags&H5S_CONV_STORAGE_MASK)!=H5S_CONV_STORAGE_CHUNKED) HGOTO_DONE(FALSE); - /* Parallel I/O conversion flag must be set */ - if(!(flags&H5S_CONV_PAR_IO_POSSIBLE)) + if ((flags&H5S_CONV_STORAGE_MASK)==H5S_CONV_STORAGE_CHUNKED) { + + /* Currently collective chunking storage + inside HDF5 is supported for either one of the following two cases: + 1. All the hyperslabs for one process is inside one chunk. + 2. For single hyperslab selection, the number of chunks that covered + the single selection for all processes should be equal. + KY, 2004/7/14 + */ + + /* Quincey, please read. + This is maybe redundent, I think only when both memory and file space be SCALAR + space, the collective IO can work. Otherwise, SELECT_POINT will be reached,collective + IO shouldn't work. + Please clarify and correct the code on the following, + Quincey said that it was probably okay if only one data space is SCALAR, + Still keep the code here until we added more tests later. + Kent */ + if(H5S_SCALAR==mem_space->extent.type || H5S_SCALAR ==file_space->extent.type) { + if(!(H5S_SCALAR==mem_space->extent.type && H5S_SCALAR ==file_space->extent.type)){ + HGOTO_DONE(FALSE); + } + else{ + HGOTO_DONE(TRUE); + } + } + + dim_rankf = file_space->extent.rank; + fsel_type = file_space->select.type->type; + + /* Assure that selection type of either data space is not H5S_SEL_NONE */ +/* Not necessary according to Quincey, commented out for the time being. + if(fsel_type == H5S_SEL_NONE || msel_type == H5S_SEL_NONE) + HGOTO_DONE(FALSE); +*/ + + if(H5S_SELECT_BOUNDS(file_space,startf,endf)==FAIL) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE,FAIL, "invalid check for single selection blocks"); + + + for(i = 0; i < layout->u.chunk.ndims;i++) + chunk_dim[i] = layout->u.chunk.dim[i]; + + /* Case 1: check whether all hyperslab in this process is inside one chunk. + Note: we don't handle when starting point is less than zero since that may cover + two chunks. */ + + /*for file space checking*/ + pcheck_hyper = 1; + for (i=0; i<dim_rankf; i++){ + if(endf[i]/chunk_dim[i]!=startf[i]/chunk_dim[i]) { + pcheck_hyper = 0; + break; + } + } + + + MPI_Reduce(&pcheck_hyper,&check_hyper,1,MPI_INT,MPI_LAND,0,comm); + MPI_Bcast(&check_hyper,1,MPI_INT,0,comm); + + /*if check_hyper is true, condition for collective IO case is fulfilled, no + need to do further test. */ + if(check_hyper) HGOTO_DONE(TRUE); + + /* Case 2:Check whether the number of chunks that covered the single hyperslab is the same. + If not,no collective chunk IO. We need to check both file and memeory space + KY, 2004/7/14 + */ + + c1 = H5S_SELECT_IS_SINGLE(file_space); + c2 = H5S_SELECT_IS_SINGLE(mem_space); + + if(c1==FAIL || c2 ==FAIL) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "invalid check for single selection blocks"); + if(c1==FALSE || c2 ==FALSE) HGOTO_DONE(FALSE); + tnum_chunkf = 1; + for (i = 0; i<dim_rankf;i++){ + fnum_chunk[i] = endf[i]/chunk_dim[i]-startf[i]/chunk_dim[i]+1; + tnum_chunkf = fnum_chunk[i]*tnum_chunkf; + } + + MPI_Reduce(&tnum_chunkf,&manum_chunkf,1,MPI_INT,MPI_MAX,0,comm); + MPI_Reduce(&tnum_chunkf,&minum_chunkf,1,MPI_INT,MPI_MIN,0,comm); + + if(rank == 0) { + if(manum_chunkf!=minum_chunkf) + check_num_chunkf = 0; + else + check_num_chunkf = 1; + } + + MPI_Bcast(&check_num_chunkf,1,MPI_INT,0,comm); + + if(!check_num_chunkf) HGOTO_DONE(FALSE); + + } + done: FUNC_LEAVE_NOAPI(ret_value); } /* H5S_mpio_opt_possible() */ |