Visible to Intel only — GUID: GUID-CCB050C0-F730-46C8-9852-B5F21D36CEAE
Visible to Intel only — GUID: GUID-CCB050C0-F730-46C8-9852-B5F21D36CEAE
P_[ACTION]_shared
Concurrent access to a common file by all participating processes, with a shared file pointer. See the basic definitions and a schematic view of the pattern below.
P_[ACTION]_shared Definition
Property |
Description |
---|---|
Measured pattern |
As symbolized in figure I/O benchmarks, aggregation for output |
Elementary I/Oaction |
As symbolized in the figure below. In this figure, Nproc is the number of processes. |
MPI routines for theblocking mode |
MPI_File_write_a t/MPI_File_read_at |
MPI routines for thenonblocking mode |
MPI_File_iwrite_at /MPI_File_iread_at |
etype |
MPI_BYTE |
File type |
MPI_BYTE |
MPI data type |
MPI_BYTE |
Reported timings |
t (in μsec) as indicated in the figure I/O benchmarks, aggregation for output, aggregate and non-aggregate for the Write flavor. |
Reported throughput |
x/t, aggregate and non-aggregate for the Write flavor |