[openib-general] [PATCH][SDP] AIO buffer corruption

[Steven Wooding]

Libor Michalek wrote:

>On Mon, May 02, 2005 at 03:48:51PM +0100, Steven Wooding wrote:
>  
>
>>Hello Libor,
>>
>>I've tried your patch, but unfortunately it made no difference to 
>>the -32/-104 errors I get. I have observed the following features, 
>>which may help you diagnose my problem:
>>
>>Platform: 64 bit
>>OS: RHEL 4
>>Kernel: 2.6.11.6
>>OpenIB gen2: 2225
>>SM: IO5000 switch
>>    
>>
>
>Steve,
>  
>  I'm not seeing this issue on my x86_64 systems. Is there anything
>in the syslog on either system? If you build SDP with debug, there
>will be messages in the log, any errors? Which HCA are you using, and
>which firmware? Also, can you send the exact command line?
>
>-Libor
>
>
>  
>
Hi Libor,

Actually your patch did make a difference (thanks). After playing around 
with ttcp.aio a bit more I now find that long runs now work fine if the 
message size is larger than the zero copy threshold. I'll get back to 
you tomorrow about the details of my setup. I did turn debugging on, but 
did not see any different messages when the -32/-104 error occurred, now 
for message sizes smaller than the zero threshold.

Cheers,

Steve.