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/**
* Copyright (c) NVIDIA CORPORATION & AFFILIATES, 2001-2014. ALL RIGHTS RESERVED.
* Copyright (C) UT-Battelle, LLC. 2014. ALL RIGHTS RESERVED.
* Copyright (C) ARM Ltd. 2016.All rights reserved.
* See file LICENSE for terms.
*/
extern "C" {
#include <ucs/time/time.h>
}
#include <common/test.h>
#include "uct_test.h"
class test_uct_event : public uct_test {
public:
void init() {
uct_test::init();
m_e1 = uct_test::create_entity(0);
m_entities.push_back(m_e1);
m_e2 = uct_test::create_entity(0, NULL, NULL, NULL, NULL, NULL,
async_event_handler, this);
m_entities.push_back(m_e2);
check_skip_test();
m_e1->connect(0, *m_e2, 0);
m_e2->connect(0, *m_e1, 0);
/* give a chance to finish connection for some transports (ib/ud, tcp) */
flush();
m_am_send_count = 0;
m_am_recv_count = 0;
}
typedef struct {
unsigned length;
/* data follows */
} recv_desc_t;
static void async_event_handler(void *arg, unsigned flags) {
test_uct_event *self = static_cast<test_uct_event*>(arg);
self->m_async_event_ctx.signal();
}
static ucs_status_t am_handler(void *arg, void *data, size_t length,
unsigned flags) {
recv_desc_t *my_desc = (recv_desc_t *) arg;
uint64_t *test_ib_hdr = (uint64_t *) data;
uint64_t *actual_data = (uint64_t *) test_ib_hdr + 1;
unsigned data_length = length - sizeof(test_ib_hdr);
my_desc->length = data_length;
if (*test_ib_hdr == 0xbeef) {
memcpy(my_desc + 1, actual_data , data_length);
}
++m_am_recv_count;
return UCS_OK;
}
void send_am_data(unsigned send_flags, bool progress_rx) {
ssize_t res;
m_send_data = 0xdeadbeef;
do {
res = uct_ep_am_bcopy(m_e1->ep(0), 0, pack_u64,
&m_send_data, send_flags);
m_e1->progress();
if (progress_rx) {
m_e2->progress();
}
} while (res == UCS_ERR_NO_RESOURCE);
ASSERT_EQ((ssize_t)sizeof(m_send_data), res);
++m_am_send_count;
}
void test_recv_am(unsigned arm_flags, unsigned send_flags);
static size_t pack_u64(void *dest, void *arg)
{
*reinterpret_cast<uint64_t*>(dest) = *reinterpret_cast<uint64_t*>(arg);
return sizeof(uint64_t);
}
void arm(entity *e, unsigned arm_flags)
{
ucs_status_t status;
unsigned progress_count;
do {
progress_count = e->progress();
status = uct_iface_event_arm(e->iface(), arm_flags);
} while ((status == UCS_ERR_BUSY) || (progress_count != 0));
ASSERT_EQ(UCS_OK, status);
}
double measure_am_loop(unsigned count, unsigned send_flags)
{
ucs_time_t start_time = ucs_get_time();
for (unsigned i = 0; i < count; ++i) {
send_am_data(send_flags, true);
while (m_am_recv_count < m_am_send_count) {
progress();
}
}
return ucs_time_to_sec(ucs_get_time() - start_time);
}
protected:
static unsigned m_am_recv_count;
entity *m_e1, *m_e2;
unsigned m_am_send_count;
uct_test::async_event_ctx m_async_event_ctx;
uint64_t m_send_data;
};
unsigned test_uct_event::m_am_recv_count = 0;
void test_uct_event::test_recv_am(unsigned arm_flags, unsigned send_flags)
{
static const unsigned count = 100000 / ucs::test_time_multiplier();
recv_desc_t *recv_buffer;
unsigned spurious_count = 0;
recv_buffer = (recv_desc_t *)malloc(sizeof(*recv_buffer) +
sizeof(m_send_data));
recv_buffer->length = 0; /* Initialize length to 0 */
/* set a callback for the uct to invoke for receiving the data */
uct_iface_set_am_handler(m_e2->iface(), 0, am_handler, recv_buffer, 0);
EXPECT_FALSE(m_async_event_ctx.wait_for_event(*m_e2, 0));
double time1 = measure_am_loop(count, send_flags);
for (int retry = 0; ; ++retry) {
for (unsigned i = 0; i < count; ++i) {
arm(m_e2, arm_flags);
if (m_async_event_ctx.wait_for_event(*m_e2, 0)) {
++spurious_count;
}
/* send the data */
send_am_data(send_flags, false);
/* wait for the event */
EXPECT_TRUE(m_async_event_ctx.wait_for_event(*m_e2, 60));
/* recv the data */
unsigned progress_count = 0;
while (m_am_recv_count < m_am_send_count) {
progress_count += progress();
}
EXPECT_GE(progress_count, 0);
}
/* Expect no events arrive unless when we asked for it */
EXPECT_LT(spurious_count, ucs_max(100, count / 100));
double time2 = measure_am_loop(count, send_flags);
double ratio = time2 / time1;
UCS_TEST_MESSAGE << "Send time: " << time1 << " after arm: " << time2
<< " ratio: " << ratio
<< " (" << retry << "/" << ucs::perf_retry_count << ")";
if ((ucs::test_time_multiplier() > 1) ||
(ucs::perf_retry_count == 0)) {
UCS_TEST_MESSAGE << "(Not validating performance)";
break;
} else if (ratio < 1.4) {
break; /* Success */
} else if (retry >= ucs::perf_retry_count) {
ADD_FAILURE() << "Sending after event is armed is too slow";
break;
}
ucs::safe_sleep(ucs::perf_retry_interval);
}
m_e1->flush();
free(recv_buffer);
}
UCS_TEST_SKIP_COND_P(test_uct_event, am_no_fc,
!check_caps(UCT_IFACE_FLAG_CB_SYNC |
UCT_IFACE_FLAG_AM_BCOPY) ||
!check_event_caps(UCT_IFACE_FLAG_EVENT_RECV),
"RC_FC_ENABLE?=n")
{
test_recv_am(UCT_EVENT_RECV, 0);
}
UCS_TEST_SKIP_COND_P(test_uct_event, am_with_fc,
!check_caps(UCT_IFACE_FLAG_CB_SYNC |
UCT_IFACE_FLAG_AM_BCOPY) ||
!check_event_caps(UCT_IFACE_FLAG_EVENT_RECV),
"RC_FC_ENABLE~=y")
{
test_recv_am(UCT_EVENT_RECV, 0);
}
UCS_TEST_SKIP_COND_P(test_uct_event, sig_am,
!check_caps(UCT_IFACE_FLAG_CB_SYNC |
UCT_IFACE_FLAG_AM_BCOPY) ||
!check_event_caps(UCT_IFACE_FLAG_EVENT_RECV_SIG))
{
test_recv_am(UCT_EVENT_RECV_SIG, UCT_SEND_FLAG_SIGNALED);
}
UCT_INSTANTIATE_NO_SELF_TEST_CASE(test_uct_event);
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