Draft: Add client-side region cache - #314
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| int rank_limit = 5; | ||
| double end_time; | ||
| time_t cur_time = time(NULL); | ||
| struct tm *log_time = localtime(&cur_time); |
| end_time = MPI_Wtime(); | ||
| if (pdc_client_mpi_rank_g < rank_limit) { | ||
| cur_time = time(NULL); | ||
| log_time = localtime(&cur_time); |
| temp_inter_recv_buf = (char *)PDC_malloc(max_inter_recv_chunk * INTER_TRANSFER_UNIT_SIZE + 1); | ||
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| printf("[RANK %d] global_max_chunk_size: %d, max_intra_recv_chunk: %d, max_inter_recv_chunk: %d\n", | ||
| client_info.world_rank, global_max_chunk_size, max_intra_recv_chunk, max_inter_recv_chunk); |
| temp_inter_recv_buf = (char *)PDC_malloc(max_inter_recv_chunk * INTER_TRANSFER_UNIT_SIZE + 1); | ||
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| printf("[RANK %d] global_max_chunk_size: %d, max_intra_recv_chunk: %d, max_inter_recv_chunk: %d\n", | ||
| client_info.world_rank, global_max_chunk_size, max_intra_recv_chunk, max_inter_recv_chunk); |
| temp_inter_recv_buf = (char *)PDC_malloc(max_inter_recv_chunk * INTER_TRANSFER_UNIT_SIZE + 1); | ||
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| printf("[RANK %d] global_max_chunk_size: %d, max_intra_recv_chunk: %d, max_inter_recv_chunk: %d\n", | ||
| client_info.world_rank, global_max_chunk_size, max_intra_recv_chunk, max_inter_recv_chunk); |
| // MPI_Allgather(&obj_prefetch_list_len, 1, MPI_INT, global_list_len, 1, MPI_INT, MPI_COMM_WORLD); | ||
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| global_obj_prefetch_list = | ||
| (pdcid_t *)PDC_malloc(obj_prefetch_list_len * pdc_client_mpi_size_g * sizeof(pdcid_t)); |
| obj_prefetch_list_len, MPI_UINT64_T, MPI_COMM_WORLD); | ||
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| if (reg_offset_list != NULL) { | ||
| global_offset_list = (uint64_t *)PDC_malloc(reg_dim * pdc_client_mpi_size_g * sizeof(uint64_t)); |
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| if (reg_offset_list != NULL) { | ||
| global_offset_list = (uint64_t *)PDC_malloc(reg_dim * pdc_client_mpi_size_g * sizeof(uint64_t)); | ||
| global_size_list = (uint64_t *)PDC_malloc(reg_dim * pdc_client_mpi_size_g * sizeof(uint64_t)); |
| perr_t ret_value = SUCCEED; | ||
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| uint64_t read_size = 0; | ||
| int by_size; |
| PDCregion_print_prefetch_list() | ||
| { | ||
| perr_t ret_value = SUCCEED; | ||
| int i; |
hyunjuooh
marked this pull request as draft
September 3, 2026 16:02
hyunjuooh
changed the title
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Description
Adds a client-side region cache for the PDC client API. Regions read from the server are cached locally so repeated reads of the same region are served from the client. Includes an optional prefetch path for retrieving regions ahead of use. The feature is gated behind the
PDC_CLIENT_CACHECMake option (off by default).What changes are proposed in this pull request?
Checklist: