[ewg] Issues with ping-pong tests

[Sharma, Karun]

1. ibv_ud_pingpong :  doesn't work if size > 2048. I am getting error saying " Failed status 1 for wr_id 2". 
For sizes <= 2048, it is working fine. 

ss22:/usr # ibv_ud_pingpong 172.20.51.223 -s 2050
libibverbs: Warning: RLIMIT_MEMLOCK is 32768 bytes.
    This will severely limit memory registrations.  local address:  LID 0x0001, QPN 0x570406, PSN 0x1c03c6
  remote address: LID 0x0002, QPN 0x66041a, PSN 0xce376e
Failed status 1 for wr_id 2
ss22:/usr # 
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2. -m option of ibv_srq_pingpong doesn't work. The error which we are getting is also not related to MTU. In the man page, there is no mention about this option, but if we do "ibv_srq_pingpong -h", we can see -m option.
 
ss23:~ # ibv_srq_pingpong -m 512
rx_depth 500 is too small for 512 QPs -- must have at least one receive per QP.

ss23:~ # ibv_srq_pingpong -m 500
Segmentation fault
ss23:~ # 
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3. ib_rdma_lat works fine till the size <=28. After that it starts giving error saying "Couldn't post send: scnt=1".
 
ss22:/usr # ib_rdma_lat 172.20.51.223 -s 28
libibverbs: Warning: RLIMIT_MEMLOCK is 32768 bytes.
    This will severely limit memory registrations.   local address: LID 0x01 QPN 0x760407 PSN 0x34fcba RKey 0x8fda0039 VAddr 0x0000000050f01c
  remote address: LID 0x02 QPN 0x9c041b PSN 0x589d14 RKey 0x9072007f VAddr 0x0000000051101c
Latency typical: 4.50868 usec
Latency best   : 4.27426 usec
Latency worst  : 60.6905 usec
ss22:/usr # ib_rdma_lat 172.20.51.223 -s 29
libibverbs: Warning: RLIMIT_MEMLOCK is 32768 bytes.
    This will severely limit memory registrations.   local address: LID 0x01 QPN 0x780407 PSN 0xf2cbca RKey 0x8fea0039 VAddr 0x0000000050f01d
  remote address: LID 0x02 QPN 0x9e041b PSN 0x7872 RKey 0x9082007f VAddr 0x0000000051101d
Couldn't post send: scnt=1
ss22:/usr #
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Please let me know if this is expected behaviour.
 
Thanks
Karun
 
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