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ch4/posix: using polling loop for recv and send queue #7646

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ch4/posix: using polling loop for recv and send queue #7646

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22 changes: 22 additions & 0 deletions src/mpid/ch4/shm/posix/posix_init.c
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,28 @@
description : >-
Controls topology-aware communication in POSIX.

- name : MPIR_CVAR_CH4_SHM_POSIX_PROGRESS_RECV_LOOPS
category : CH4
type : int
default : 1
class : none
verbosity : MPI_T_VERBOSITY_USER_BASIC
scope : MPI_T_SCOPE_ALL_EQ
description : >-
Controls the maximum number of polling on recv queue
per progress.

- name : MPIR_CVAR_CH4_SHM_POSIX_PROGRESS_SEND_LOOPS
category : CH4
type : int
default : 1
class : none
verbosity : MPI_T_VERBOSITY_USER_BASIC
scope : MPI_T_SCOPE_ALL_EQ
description : >-
Controls the maximum number of polling on send queue (for
deferred sends) per progress.

=== END_MPI_T_CVAR_INFO_BLOCK ===
*/

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22 changes: 18 additions & 4 deletions src/mpid/ch4/shm/posix/posix_progress.h
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Expand Up @@ -144,11 +144,25 @@ MPL_STATIC_INLINE_PREFIX int MPIDI_POSIX_progress(int vci, int *made_progress)

MPIR_Assert(vci < MPIDI_POSIX_global.num_vcis);

mpi_errno = MPIDI_POSIX_progress_recv(vci, made_progress);
MPIR_ERR_CHECK(mpi_errno);
for (int i = 0; i < MPIR_CVAR_CH4_SHM_POSIX_PROGRESS_RECV_LOOPS; i++) {
int made_recv_progress = 0;
mpi_errno = MPIDI_POSIX_progress_recv(vci, &made_recv_progress);
MPIR_ERR_CHECK(mpi_errno);
if (!made_recv_progress)
break;

*made_progress |= made_recv_progress;
}

for (int i = 0; i < MPIR_CVAR_CH4_SHM_POSIX_PROGRESS_SEND_LOOPS; i++) {
int made_send_progress = 0;
mpi_errno = MPIDI_POSIX_progress_send(vci, &made_send_progress);
MPIR_ERR_CHECK(mpi_errno);
if (!made_send_progress)
break;

mpi_errno = MPIDI_POSIX_progress_send(vci, made_progress);
MPIR_ERR_CHECK(mpi_errno);
*made_progress |= made_send_progress;
}

fn_exit:
MPIR_FUNC_EXIT;
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