17f51a0389
Add two new configure options that specify: 1. when to add padding to the openib control header - this *only* happens when the configure option is specified 2. when to use the dr-like checksum as opposed to the memcpy checksum. Not selectable at runtime - to eliminate performance impacts, this is a configure-only option Also removed an unused checksum version from opal/util/crc.h. The new component still needs a little cleanup and some sync with recent ob1 bug fixes. It was created as a separate module to avoid performance hits in ob1 itself, though most of the code is duplicative. The component is only selectable by either specifying it directly, or configuring with the dr-like checksum -and- setting -mca pml_csum_enable_checksum 1. Modify the LANL platform files to take advantage of the new module. This commit was SVN r20846.
72 строки
2.3 KiB
C
72 строки
2.3 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2006 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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/**
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* @file
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*/
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#ifndef MCA_PML_CSUM_RDMAFRAG_H
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#define MCA_PML_CSUM_RDMAFRAG_H
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#include "ompi/mca/btl/btl.h"
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#include "pml_csum_hdr.h"
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BEGIN_C_DECLS
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typedef enum {
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MCA_PML_CSUM_RDMA_PUT,
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MCA_PML_CSUM_RDMA_GET
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} mca_pml_csum_rdma_state_t;
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struct mca_pml_csum_rdma_frag_t {
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ompi_free_list_item_t super;
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mca_bml_base_btl_t* rdma_bml;
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mca_pml_csum_hdr_t rdma_hdr;
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mca_pml_csum_rdma_state_t rdma_state;
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size_t rdma_length;
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mca_btl_base_segment_t rdma_segs[MCA_BTL_DES_MAX_SEGMENTS];
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void *rdma_req;
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struct mca_bml_base_endpoint_t* rdma_ep;
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ompi_convertor_t convertor;
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mca_mpool_base_registration_t* reg;
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uint32_t retries;
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};
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typedef struct mca_pml_csum_rdma_frag_t mca_pml_csum_rdma_frag_t;
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OBJ_CLASS_DECLARATION(mca_pml_csum_rdma_frag_t);
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#define MCA_PML_CSUM_RDMA_FRAG_ALLOC(frag,rc) \
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do { \
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ompi_free_list_item_t* item; \
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OMPI_FREE_LIST_WAIT(&mca_pml_csum.rdma_frags, item, rc); \
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frag = (mca_pml_csum_rdma_frag_t*)item; \
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} while(0)
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#define MCA_PML_CSUM_RDMA_FRAG_RETURN(frag) \
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do { \
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/* return fragment */ \
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OMPI_FREE_LIST_RETURN(&mca_pml_csum.rdma_frags, \
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(ompi_free_list_item_t*)frag); \
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} while(0)
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END_C_DECLS
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#endif
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