Hi.
Why do you use ntohl() on the rkey/remote_addr?
Which QP type is it? (RC or UC).
Did you poll for a completion and check that the status is good?
Dotan
Zafar Gilani wrote:
Hi,
I am trying to send two integers (essentially a buf array of type
uint32_t) to the server via RDMA_WRITE method. The following is piece
of code that I rewrote:
++++++++++++++++++++++++++++++++++
buf[0] = strtoul(argv[2], NULL, 0);
buf[1] = strtoul(argv[3], NULL, 0);
printf("%d + %d = ", buf[0], buf[1]);
buf[0] = htonl(buf[0]);
buf[1] = htonl(buf[1]);
/* -----------------------------------
---- START - write operation 1 ----
----------------------------------- */
int c;
for(c = 0; c < 2; c++)
{
sge.addr = (uintptr_t) buf + ((uint32_t)c*sizeof(uint32_t));
sge.length = sizeof(uint32_t);
sge.lkey = mr->lkey;
send_wr.wr_id = (uint64_t)(c+1);//1;
send_wr.opcode = IBV_WR_RDMA_WRITE;
send_wr.sg_list = &sge;
send_wr.num_sge = 1;
send_wr.wr.rdma.rkey = ntohl(server_pdata.buf_rkey);
send_wr.wr.rdma.remote_addr = ntohll(server_pdata.buf_va);
if(ibv_post_send(cm_id->qp, &send_wr, &bad_send_wr))
return 1;
}
++++++++++++++++++++++++++++++++++
I receive no compilation errors but it does not write to remote
memory. Any suggestions of what might be wrong?
Thanks,
--
Syed Zafar ul Hussan Gilani | BIT-7
Research Student | CHPSC
MSP 2008-09
NUST SEECS | http://hpc.niit.edu.pk/~zafar
<http://hpc.niit.edu.pk/%7Ezafar>
------------------------------------------------------------------------
_______________________________________________
general mailing list
[email protected]
http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general
To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
_______________________________________________
general mailing list
[email protected]
http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general
To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
