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Merge branch 'develop' of https://github.com/paboyle/Grid into develop

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This commit is contained in:
Peter Boyle 2021-09-22 06:03:06 -07:00
commit cffc736bb3
2 changed files with 36 additions and 33 deletions
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65
Grid/communicator/SharedMemoryMPI.cc
View File

@ -513,26 +513,16 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
///////////////////////////////////////////////////////////////////////////////////////////////////////////
// Each MPI rank should allocate our own buffer
///////////////////////////////////////////////////////////////////////////////////////////////////////////
#ifdef GRID_SYCL_LEVEL_ZERO_IPC
auto zeDevice = cl::sycl::get_native<cl::sycl::backend::level_zero>(theGridAccelerator->get_device());
auto zeContext= cl::sycl::get_native<cl::sycl::backend::level_zero>(theGridAccelerator->get_context());
ze_device_mem_alloc_desc_t zeDesc = {};
zeMemAllocDevice(zeContext,&zeDesc,bytes,2*1024*1024,zeDevice,&ShmCommBuf);
std::cout << WorldRank << header " SharedMemoryMPI.cc zeMemAllocDevice "<< bytes
<< "bytes at "<< std::hex<< ShmCommBuf <<std::dec<<" for comms buffers " <<std::endl;
#else
ShmCommBuf = acceleratorAllocDevice(bytes);
#endif
if (ShmCommBuf == (void *)NULL ) {
std::cerr << " SharedMemoryMPI.cc acceleratorAllocDevice failed NULL pointer for " << bytes<<" bytes " << std::endl;
exit(EXIT_FAILURE);
}
// if ( WorldRank == 0 ){
if ( 1 ){
if ( WorldRank == 0 ){
std::cout << WorldRank << header " SharedMemoryMPI.cc acceleratorAllocDevice "<< bytes
<< "bytes at "<< std::hex<< ShmCommBuf <<std::dec<<" for comms buffers " <<std::endl;
}
// SharedMemoryZero(ShmCommBuf,bytes);
SharedMemoryZero(ShmCommBuf,bytes);
std::cout<< "Setting up IPC"<<std::endl;
///////////////////////////////////////////////////////////////////////////////////////////////////////////
// Loop over ranks/gpu's on our node
@ -546,20 +536,24 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
void * thisBuf = ShmCommBuf;
if(!Stencil_force_mpi) {
#ifdef GRID_SYCL_LEVEL_ZERO_IPC
ze_ipc_mem_handle_t handle;
typedef struct { int fd; pid_t pid ; } clone_mem_t;
auto zeDevice = cl::sycl::get_native<cl::sycl::backend::level_zero>(theGridAccelerator->get_device());
auto zeContext = cl::sycl::get_native<cl::sycl::backend::level_zero>(theGridAccelerator->get_context());
ze_ipc_mem_handle_t ihandle;
clone_mem_t handle;
if ( r==WorldShmRank ) {
auto err = zeMemGetIpcHandle(zeContext,ShmCommBuf,&handle);
auto err = zeMemGetIpcHandle(zeContext,ShmCommBuf,&ihandle);
if ( err != ZE_RESULT_SUCCESS ) {
std::cerr << "SharedMemoryMPI.cc zeMemGetIpcHandle failed for rank "<<r<<" "<<std::hex<<err<<std::dec<<std::endl;
std::cout << "SharedMemoryMPI.cc zeMemGetIpcHandle failed for rank "<<r<<" "<<std::hex<<err<<std::dec<<std::endl;
exit(EXIT_FAILURE);
} else {
std::cerr << "SharedMemoryMPI.cc zeMemGetIpcHandle succeeded for rank "<<r<<" "<<std::hex<<err<<std::dec<<std::endl;
std::cout << "SharedMemoryMPI.cc zeMemGetIpcHandle succeeded for rank "<<r<<" "<<std::hex<<err<<std::dec<<std::endl;
}
std::cerr<<"Allocated IpcHandle rank "<<r<<" (hex) ";
for(int c=0;c<ZE_MAX_IPC_HANDLE_SIZE;c++){
std::cerr<<std::hex<<(uint32_t)((uint8_t)handle.data[c])<<std::dec;
}
std::cerr<<std::endl;
memcpy((void *)&handle.fd,(void *)&ihandle,sizeof(int));
handle.pid = getpid();
}
#endif
#ifdef GRID_CUDA
@ -602,18 +596,27 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
#ifdef GRID_SYCL_LEVEL_ZERO_IPC
if ( r!=WorldShmRank ) {
thisBuf = nullptr;
std::cerr<<"Using IpcHandle rank "<<r<<" ";
for(int c=0;c<ZE_MAX_IPC_HANDLE_SIZE;c++){
std::cerr<<std::hex<<(uint32_t)((uint8_t)handle.data[c])<<std::dec;
}
std::cerr<<std::endl;
auto err = zeMemOpenIpcHandle(zeContext,zeDevice,handle,0,&thisBuf);
std::cout<<"mapping seeking remote pid/fd "
<<handle.pid<<"/"
<<handle.fd<<std::endl;
int pidfd = syscall(SYS_pidfd_open,handle.pid,0);
std::cout<<"Using IpcHandle pidfd "<<pidfd<<"\n";
// int myfd = syscall(SYS_pidfd_getfd,pidfd,handle.fd,0);
int myfd = syscall(438,pidfd,handle.fd,0);
std::cout<<"Using IpcHandle myfd "<<myfd<<"\n";
memcpy((void *)&ihandle,(void *)&myfd,sizeof(int));
auto err = zeMemOpenIpcHandle(zeContext,zeDevice,ihandle,0,&thisBuf);
if ( err != ZE_RESULT_SUCCESS ) {
std::cerr << "SharedMemoryMPI.cc "<<zeContext<<" "<<zeDevice<<std::endl;
std::cerr << "SharedMemoryMPI.cc zeMemOpenIpcHandle failed for rank "<<r<<" "<<std::hex<<err<<std::dec<<std::endl;
std::cout << "SharedMemoryMPI.cc "<<zeContext<<" "<<zeDevice<<std::endl;
std::cout << "SharedMemoryMPI.cc zeMemOpenIpcHandle failed for rank "<<r<<" "<<std::hex<<err<<std::dec<<std::endl;
exit(EXIT_FAILURE);
} else {
std::cerr << "SharedMemoryMPI.cc zeMemOpenIpcHandle succeeded for rank "<<r<<" "<<std::hex<<err<<std::dec<<std::endl;
std::cout << "SharedMemoryMPI.cc zeMemOpenIpcHandle succeeded for rank "<<r<<std::endl;
std::cout << "SharedMemoryMPI.cc zeMemOpenIpcHandle pointer is "<<std::hex<<thisBuf<<std::dec<<std::endl;
}
assert(thisBuf!=nullptr);
}
@ -640,7 +643,7 @@ void GlobalSharedMemory::SharedMemoryAllocate(uint64_t bytes, int flags)
// Save a copy of the device buffers
///////////////////////////////////////////////////////////////
}
WorldShmCommBufs[r] = thisBuf;
WorldShmCommBufs[r] = thisBuf;
#else
WorldShmCommBufs[r] = ShmCommBuf;
#endif

4
Grid/threads/Accelerator.h
View File

@ -276,7 +276,7 @@ accelerator_inline int acceleratorSIMTlane(int Nsimd) {
if(nt < 8)nt=8; \
cl::sycl::range<3> local {nt,1,nsimd}; \
cl::sycl::range<3> global{unum1,unum2,nsimd}; \
cgh.parallel_for<class dslash>( \
cgh.parallel_for( \
cl::sycl::nd_range<3>(global,local), \
[=] (cl::sycl::nd_item<3> item) /*mutable*/ \
[[intel::reqd_sub_group_size(8)]] \
@ -445,7 +445,7 @@ accelerator_inline int acceleratorSIMTlane(int Nsimd) { return 0; } // CUDA spec
inline void acceleratorCopyToDevice(void *from,void *to,size_t bytes) { memcpy(to,from,bytes);}
inline void acceleratorCopyFromDevice(void *from,void *to,size_t bytes){ memcpy(to,from,bytes);}
inline void acceleratorCopyDeviceToDeviceAsynch(void *from,void *to,size_t bytes) { memcpy(to,from,bytes);}
inline void acceleratorCopySynchronize(void) {};
inline void acceleratorCopySynchronise(void) {};
inline int acceleratorIsCommunicable(void *ptr){ return 1; }
inline void acceleratorMemSet(void *base,int value,size_t bytes) { memset(base,value,bytes);}