我收到此错误,想知道如何修复它。一点背景:它适用于 open mpi 但不适用于 intel mpi。
错误:
Fatal error in MPI_Recv: Invalid argument, error stack:
MPI_Recv(200): MPI_Recv(buf=0x7fffffff92f0, count=2, MPI_INT, src=0,
tag=123, MPI_COMM_WORLD, status=(ni$
MPI_Recv(93).: Null pointer in parameter status
代码:先发送
int rank;
int store[2];
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
// if master node
if(rank == 0) {
// Some maths to distribute the workload where positions_start and
// positions end are std::vector<int>
int this_core[2];
for(int i = 0; i < number_threads; i++) {
store[0] = positions_start[i];
store[1] = positions_end[i];
if (i == 0) {
//memcpy(this_core, store, 2 * sizeof(int));
this_core[0] = positions_start[i];
this_core[1] = positions_end[i];
} else {
MPI_Send(&store, 2, MPI_INT, i, 123, MPI_COMM_WORLD);
}
}
}
首先,接收:
// not master node
{ else {
// Create array
store[0] = -1;
store[1] = -1;
MPI_Recv(&store, 2, MPI_INT, 0, 123, MPI_COMM_WORLD, NULL);
第二次发送:
float tempDataSet[(aVolumeSize[1] * aVolumeSize[0]) * ((store[1] - store[0]) + 1)];
// Some math comutations here and results stored in tempDataset
// Send results to the master
MPI_Send(&tempDataSet, (aVolumeSize[1] * aVolumeSize[0]) * ((store[1] - store[0]) + 1), MPI_FLOAT, 0, 124, MPI_COMM_WORLD);
}
二、领取:
// back in master node receive the array from other nodes and store them in a larger array
// Set the size of the buffer is necessary
unsigned int number_of_voxels(aVolumeSize[0] * aVolumeSize[1] * aVolumeSize[2]);
std::vector<float>& apVoxelDataSet;
apVoxelDataSet.resize(number_of_voxels, 0);
for (int i = 1; i < number_threads; ++i) {
// Calculate the size of the array
arrSize = (aVolumeSize[1] * aVolumeSize[0]) * ((positions_end[i] - positions_start[i]) + 1);
float values[arrSize + 1];
MPI_Recv(&values, arrSize, MPI_FLOAT, i, 124, MPI_COMM_WORLD, NULL);
std::copy(values, values + arrSize + 1, apVoxelDataSet.begin() + curLoc);
curLoc += arrSize;
}
使用 openmpi 一切正常,但是,错误仅在我使用 intelmpi 时出现。我怎样才能修复这个错误,以便它在 intelmpi 中工作?
编辑:slurm文件
#!/bin/bash --login
#SBATCH --job-name=MPI_assignment
#SBATCH -o MPI_assignment.out
#SBATCH -e MPI_assignment.err
#SBATCH -t 0-12:00
#SBATCH --ntasks=60
#SBATCH --tasks-per-node=8
module purge
module load compiler/intel mpi/intel
printf "Making Project ...\n"
make
printf "Done!"
mpirun -np $SLURM_NTASKS ./test >& MPI_assignment.log.$SLURM_JOBID
如果我换行:
module load compiler/intel mpi/intel
至
module load compiler/intel mpi/openmpi
或者
module load compiler/gnu mpi/openmpi
该程序有效,没有错误发生。
生成文件
CXX=mpiicc
BIN=test
LIB=libImplicitSurface.a
OBJECTS= ImplicitSurface.o test.o
CXXFLAGS+=-I../include -O3 -Wall
LDFLAGS+=-L. -lImplicitSurface
all: $(BIN)
$(BIN): $(LIB) test.o
@echo Build $@
@$(CXX) -o $@ test.o $(LDFLAGS)
$(LIB): ImplicitSurface.o
@echo Build $@ from $<
@$(AR) rcs $@ $<
# Default rule for creating OBJECT files from CXX files
%.o: ../src/%.cxx
@echo Build $@ from $<
@$(CXX) $(CXXFLAGS) -c $< -o $@
ImplicitSurface.o: ../include/ImplicitSurface.h
../include/ImplicitSurface.inl ../src/ImplicitSurface.cxx
test.o: ../include/ImplicitSurface.h $(LIB) ../src/test.cxx
clean:
$(RM) $(OBJECTS)
$(RM) $(LIB)
$(RM) $(BIN)
$(RM) -r ../doc/html
$(RM) -r ../doc/tex