Edgar Gabriel
53fa35b980
* use dlsym for MPI functions
to allow compiling without MPI support, convert the usage of MPI functions and symbols to be based on a dlopen/dlsym based mechanism. Turns out this cannot be done entirely vendor neutral, slightly different solutions might be required for Open MPI, MPICH and the new MPI ABI.
* checkpoint
more work to be done.
* checkpoint 2
* checkpoint 3
* checkpoint 4
examples compile and link correctly
* checkpoitn 5 (I think)
* Checkpoitn 6
* dyld-mpi: adapt GDA
* dyldmpi: tests that depend on MPI need to link with it themselves
* do not ../mpi_instance.h
* dyldmpi: make the symetricHeapTestFixture compile
* dyldmpi: Change cmakery, compiles and run gda w/o external MPI
* Make it also compile in external MPI mode
* dyldmpi: ipc unit tests compile but do not link
* dyldmpi: new approach, if external mpi required, link with mpi,
otherwise use ompi5 abi
* C-style comments in cmakelist..
* dyldmpi: examples: do not fail compiling if MPI not found at build time,
instead do not compile the MPI required examples
* more updates to CMake logic
* convert RO backend
and a few other cleanups
* update some unit tests
to work with the dlopen MPI environment correctly.
---------
Co-authored-by: Aurelien Bouteiller <abouteil@amd.com>
[ROCm/rocshmem commit: e4c427a736]
122 řádky
4.4 KiB
C++
122 řádky
4.4 KiB
C++
/******************************************************************************
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* Copyright (c) Advanced Micro Devices, Inc. All rights reserved.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*****************************************************************************/
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/*
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* First find your offload target, and if xnack is enabled/disabled using
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rocminfo | grep amdgcn
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* It should output a string like so:
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"Name: amdgcn-amd-amdhsa--gfx942:sramecc+:xnack-"
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* This lists the offload taret (gfx942) and that xnack is disabled (xnack-).
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* Therefore, we need to specify --offload-arch=gfx942:xnack- to our link and compile commands.
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* Please modify the compile and link commands to suit your system
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* To compile:
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hipcc -c -fgpu-rdc -x hip rocshmem_init_attr_test.cc \
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--offload-arch=<target>:<xnack> \
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-I/opt/rocm/include \
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-I$ROCSHMEM_INSTALL_DIR/include \
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-I$OPENMPI_UCX_INSTALL_DIR/include/
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* To link:
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hipcc -fgpu-rdc --hip-link rocshmem_init_attr_test.o -o rocshmem_init_attr_test \
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--offload-arch=<target>:<xnack> \
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$ROCSHMEM_INSTALL_DIR/lib/librocshmem.a \
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$OPENMPI_UCX_INSTALL_DIR/lib/libmpi.so \
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-L/opt/rocm/lib -lamdhip64 -lhsa-runtime64
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* To run:
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mpirun -np 8 -x ROCSHMEM_MAX_NUM_CONTEXTS=2 ./rocshmem_init_attr_test
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* Note:
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running this test with the Reverse Offload (RO) conduit requires setting
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ROCSHMEM_UNIQUEID_WITH_MPI=1
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*/
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#include <rocshmem/rocshmem.hpp>
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#include <mpi.h>
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#include "util.h"
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using namespace rocshmem;
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int main (int argc, char **argv)
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{
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int world_rank, world_nranks;
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int ret;
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rocshmem_uniqueid_t uid;
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rocshmem_init_attr_t attr;
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int provided;
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MPI_Init_thread (&argc, &argv, MPI_THREAD_MULTIPLE, &provided);
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if (provided != MPI_THREAD_MULTIPLE) {
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std::cerr << "MPI_THREAD_MULTIPLE support disabled.\n";
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}
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MPI_Comm_rank (MPI_COMM_WORLD, &world_rank);
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MPI_Comm_size (MPI_COMM_WORLD, &world_nranks);
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// Create two disjoint groups of processes, each
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// one creating a unique rocshmem environment independent
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// of the other group
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MPI_Comm newcomm;
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int color = world_rank %2;
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int rank, nranks;
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MPI_Comm_split(MPI_COMM_WORLD, color, world_rank, &newcomm);
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MPI_Comm_rank (newcomm, &rank);
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MPI_Comm_size (newcomm, &nranks);
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if (rank == 0) {
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ret = rocshmem_get_uniqueid (&uid);
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if (ret != ROCSHMEM_SUCCESS) {
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std::cout << rank << ": Error in rocshmem_get_uniqueid. Aborting.\n";
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MPI_Abort (MPI_COMM_WORLD, ret);
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}
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}
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MPI_Bcast (&uid, sizeof(rocshmem_uniqueid_t), MPI_BYTE, 0, newcomm);
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ret = rocshmem_set_attr_uniqueid_args(rank, nranks, &uid, &attr);
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if (ret != ROCSHMEM_SUCCESS) {
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std::cout << rank << ": Error in rocshmem_set_attr_uniqueid_args. Aborting.\n";
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MPI_Abort (MPI_COMM_WORLD, ret);
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}
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ret = rocshmem_init_attr(ROCSHMEM_INIT_WITH_UNIQUEID, &attr);
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if (ret != ROCSHMEM_SUCCESS) {
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std::cout << rank << ": Error in rocshmem_init_attr. Aborting.\n";
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MPI_Abort (MPI_COMM_WORLD, ret);
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}
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std::cout << rank << ": rocshmem_init_attr SUCCESS\n";
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rocshmem_finalize();
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MPI_Comm_free (&newcomm);
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MPI_Finalize();
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return 0;
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}
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