Haozi, I'm not sure I understand the issue you are seeing. Can you include output from this code that illustrates the issue? I tried running with strings both less than and greater than 7 characters with no issue. The port_name is the same length in all cases on my laptop. Ken On 01/28/2015 01:56 AM, haozi wrote:

Hi, guys. My example code is the attachment.

1. What is the naming convention of service_name ? The hydra_nameserver CAN'T accept those strings whose length is less than 7. What's the exact naming convention?

2. The length of port_name by MPI_Loopup_name is different with MPI_Publish_name! You can test my code.

With best regards. Haozi

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