[ofa-general] RE: Running more than 894 processes doing rdma_listen

[Sean Hefty]

>Is there an explicit limit on the number of ports that can be listening using
>rdma_cm?

There's no inherent limit built into the code.

>It prints out CMA: unable to open RDMA device
>
>It then doesn't gracefully handle that problem, ending in
>
>Program received signal SIGSEGV, Segmentation fault.
>[Switching to Thread 47695401269920 (LWP 30003)]
>__ibv_close_device (context=0x0) at src/device.c:154
>154             int async_fd = context->async_fd;
>(gdb) where
>#0  __ibv_close_device (context=0x0) at src/device.c:154
>#1  0x00000034e360184f in ucma_cleanup () at src/cma.c:165
>#2  0x00000034e3601a13 in ucma_init () at src/cma.c:257
>#3  0x00000034e3602080 in rdma_create_event_channel () at src/cma.c:299
>#4  0x0000000000403077 in main (argc=4, argv=0x7fffb739fcc8) at rdma_bw.c:1057

Thanks - I see where the bug is for this.

- Sean