UCP/EP: Add eager multi-fragment overhead #7967
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Artemy-Mellanox
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yosefe
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Feb 27, 2022
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| if (eager) { | ||
| params->bw += 1.0 / ((1.0 / bw) + (iface_attr->overhead / | ||
| iface_attr->cap.am.max_bcopy)); |
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is it possible max_bcopy would be 0?
src/ucp/core/ucp_ep.c
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| bw = ucp_tl_iface_bandwidth(context, &iface_attr->bandwidth); | ||
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| if (eager) { | ||
| params->bw += 1.0 / ((1.0 / bw) + (iface_attr->overhead / |
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pls add comment:
/* eager protocol has overhead for each fragment */
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use
overhead = send_post_overhead + send_pre_overhead (from estimate_perf)
| @@ -1749,7 +1751,14 @@ static void ucp_ep_config_calc_params(ucp_worker_h worker, | |||
| } | |||
| } | |||
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| params->bw += ucp_tl_iface_bandwidth(context, &iface_attr->bandwidth); | |||
| bw = ucp_tl_iface_bandwidth(context, &iface_attr->bandwidth); | |||
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| @@ -360,13 +360,21 @@ void test_ucp_peer_failure::do_test(size_t msg_size, int pre_msg_count, | |||
| EXPECT_NE(UCS_OK, m_err_status); | |||
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| if (UCS_PTR_IS_PTR(sreq)) { | |||
| /* The request may either succeed or fail, even though the data is | |||
| ucs_status_t status; | |||
| /* TODO update comment | |||
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- why needed? if m_err_count!=0, i would expect the request to also complete
- update comment
- can we use request_wait()?
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discussed offline:
- use request_wait
- update comment: "If rendezvous protocol is used, the m_err_count is increased on the receiver side, so the send request may not complete immediately"
yosefe
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Mar 1, 2022
Artemy-Mellanox
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src/ucp/core/ucp_ep.c
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| status = uct_iface_estimate_perf(wiface->iface, &perf_attr); | ||
| ucs_assert(status == UCS_OK); |
yosefe
previously approved these changes
Mar 3, 2022
| @@ -1812,17 +1826,23 @@ static size_t ucp_ep_config_calc_rndv_thresh(ucp_worker_t *worker, | |||
| (2 * eager_zcopy.overhead) + rndv.overhead) - | |||
| eager_zcopy.reg_overhead - eager_zcopy.overhead; | |||
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| denumerator = eager_zcopy.reg_growth + | |||
| denominator = eager_zcopy.reg_growth + | |||
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@Artemy-Mellanox can you pls squash? |
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