Gather arrays of different sizes using MPI_Allgather
MPI_Allgather seems to assume that all arrays to be gathered from different processes are of the the same size. However, in my case, the arrays to be gathered are of different size in different processes. For this case, what is the proper subroutine to use?
Is it MPI_Allgatherv?
fortran mpi
asked Nov 14 '18 at 17:13
Youjun HuYoujun Hu
538
add a comment |
MPI_Allgather seems to assume that all arrays to be gathered from different processes are of the the same size. However, in my case, the arrays to be gathered are of different size in different processes. For this case, what is the proper subroutine to use?
Is it MPI_Allgatherv?
fortran mpi
asked Nov 14 '18 at 17:13
Youjun HuYoujun Hu
538
I tested it out:MPI_Allgathervis exactly what I need to do the job.
– Youjun Hu
Nov 17 '18 at 22:26
add a comment |
MPI_Allgather seems to assume that all arrays to be gathered from different processes are of the the same size. However, in my case, the arrays to be gathered are of different size in different processes. For this case, what is the proper subroutine to use?
Is it MPI_Allgatherv?
fortran mpi
asked Nov 14 '18 at 17:13
Youjun HuYoujun Hu
538
MPI_Allgather seems to assume that all arrays to be gathered from different processes are of the the same size. However, in my case, the arrays to be gathered are of different size in different processes. For this case, what is the proper subroutine to use?
Is it MPI_Allgatherv?
fortran mpi
fortran mpi
asked Nov 14 '18 at 17:13
Youjun HuYoujun Hu
538
asked Nov 14 '18 at 17:13
Youjun HuYoujun Hu
538
edited Nov 17 '18 at 22:21
Youjun Hu
asked Nov 14 '18 at 17:13
Youjun HuYoujun Hu
538
asked Nov 14 '18 at 17:13
Youjun HuYoujun Hu
538
asked Nov 14 '18 at 17:13
Youjun HuYoujun Hu
538
538
I tested it out:MPI_Allgathervis exactly what I need to do the job.
– Youjun Hu
Nov 17 '18 at 22:26
add a comment |
I tested it out:MPI_Allgathervis exactly what I need to do the job.
– Youjun Hu
Nov 17 '18 at 22:26
I tested it out:
MPI_Allgatherv is exactly what I need to do the job.– Youjun Hu
Nov 17 '18 at 22:26
I tested it out:
MPI_Allgatherv is exactly what I need to do the job.– Youjun Hu
Nov 17 '18 at 22:26
add a comment |
1 Answer
1
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Yes, the correct function is MPI_Allgatherv.
answered Nov 14 '18 at 17:28
ZulanZulan
15.7k63170
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Yes, the correct function is MPI_Allgatherv.
answered Nov 14 '18 at 17:28
ZulanZulan
15.7k63170
add a comment |
Yes, the correct function is MPI_Allgatherv.
answered Nov 14 '18 at 17:28
ZulanZulan
15.7k63170
add a comment |
Yes, the correct function is MPI_Allgatherv.
answered Nov 14 '18 at 17:28
ZulanZulan
15.7k63170
Yes, the correct function is MPI_Allgatherv.
answered Nov 14 '18 at 17:28
ZulanZulan
15.7k63170
answered Nov 14 '18 at 17:28
ZulanZulan
15.7k63170
answered Nov 14 '18 at 17:28
ZulanZulan
15.7k63170
answered Nov 14 '18 at 17:28
ZulanZulan
15.7k63170
15.7k63170
add a comment |
add a comment |
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I tested it out:
MPI_Allgathervis exactly what I need to do the job.– Youjun Hu
Nov 17 '18 at 22:26