Sending from all other ranks and receiving with root
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Multi tool use
Attempting to send an array to root from all other ranks.
Used the MPI_Send and MPI_Recv routines however getting deadlocked.
if (rank!=0) {
MPI_Send(&array,size,type,0,tag,comm);
}
else {
for (i=1;i<nprocessors;i++) {
MPI_Recv(&buffer_array,size,type,i,tag,comm,MPI_STATUS_IGNORE);
}
}
No luck, unfortunately. As I understand the send and receive routine, it shouldn't deadlock as long as there are matching statements.
c parallel-processing mpi
add a comment |
Attempting to send an array to root from all other ranks.
Used the MPI_Send and MPI_Recv routines however getting deadlocked.
if (rank!=0) {
MPI_Send(&array,size,type,0,tag,comm);
}
else {
for (i=1;i<nprocessors;i++) {
MPI_Recv(&buffer_array,size,type,i,tag,comm,MPI_STATUS_IGNORE);
}
}
No luck, unfortunately. As I understand the send and receive routine, it shouldn't deadlock as long as there are matching statements.
c parallel-processing mpi
3
Please provide a Minimal, Complete, and Verifiable example.
– Savithru
Dec 30 '18 at 2:12
3
Double check you are passing the right buffer argument. And be awareMPI_Gather()
is likely what you are looking for.
– Gilles Gouaillardet
Dec 30 '18 at 2:15
Thank you. I have since implemented MPI_Gather() with a larger global array and that has done the trick as I needed to print to file with only one rank.
– Peter C
Dec 31 '18 at 0:23
add a comment |
Attempting to send an array to root from all other ranks.
Used the MPI_Send and MPI_Recv routines however getting deadlocked.
if (rank!=0) {
MPI_Send(&array,size,type,0,tag,comm);
}
else {
for (i=1;i<nprocessors;i++) {
MPI_Recv(&buffer_array,size,type,i,tag,comm,MPI_STATUS_IGNORE);
}
}
No luck, unfortunately. As I understand the send and receive routine, it shouldn't deadlock as long as there are matching statements.
c parallel-processing mpi
Attempting to send an array to root from all other ranks.
Used the MPI_Send and MPI_Recv routines however getting deadlocked.
if (rank!=0) {
MPI_Send(&array,size,type,0,tag,comm);
}
else {
for (i=1;i<nprocessors;i++) {
MPI_Recv(&buffer_array,size,type,i,tag,comm,MPI_STATUS_IGNORE);
}
}
No luck, unfortunately. As I understand the send and receive routine, it shouldn't deadlock as long as there are matching statements.
c parallel-processing mpi
c parallel-processing mpi
asked Dec 30 '18 at 0:19
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Peter CPeter C
93
93
3
Please provide a Minimal, Complete, and Verifiable example.
– Savithru
Dec 30 '18 at 2:12
3
Double check you are passing the right buffer argument. And be awareMPI_Gather()
is likely what you are looking for.
– Gilles Gouaillardet
Dec 30 '18 at 2:15
Thank you. I have since implemented MPI_Gather() with a larger global array and that has done the trick as I needed to print to file with only one rank.
– Peter C
Dec 31 '18 at 0:23
add a comment |
3
Please provide a Minimal, Complete, and Verifiable example.
– Savithru
Dec 30 '18 at 2:12
3
Double check you are passing the right buffer argument. And be awareMPI_Gather()
is likely what you are looking for.
– Gilles Gouaillardet
Dec 30 '18 at 2:15
Thank you. I have since implemented MPI_Gather() with a larger global array and that has done the trick as I needed to print to file with only one rank.
– Peter C
Dec 31 '18 at 0:23
3
3
Please provide a Minimal, Complete, and Verifiable example.
– Savithru
Dec 30 '18 at 2:12
Please provide a Minimal, Complete, and Verifiable example.
– Savithru
Dec 30 '18 at 2:12
3
3
Double check you are passing the right buffer argument. And be aware
MPI_Gather()
is likely what you are looking for.– Gilles Gouaillardet
Dec 30 '18 at 2:15
Double check you are passing the right buffer argument. And be aware
MPI_Gather()
is likely what you are looking for.– Gilles Gouaillardet
Dec 30 '18 at 2:15
Thank you. I have since implemented MPI_Gather() with a larger global array and that has done the trick as I needed to print to file with only one rank.
– Peter C
Dec 31 '18 at 0:23
Thank you. I have since implemented MPI_Gather() with a larger global array and that has done the trick as I needed to print to file with only one rank.
– Peter C
Dec 31 '18 at 0:23
add a comment |
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3
Please provide a Minimal, Complete, and Verifiable example.
– Savithru
Dec 30 '18 at 2:12
3
Double check you are passing the right buffer argument. And be aware
MPI_Gather()
is likely what you are looking for.– Gilles Gouaillardet
Dec 30 '18 at 2:15
Thank you. I have since implemented MPI_Gather() with a larger global array and that has done the trick as I needed to print to file with only one rank.
– Peter C
Dec 31 '18 at 0:23