[Paraview-developers] [EXTERNAL] ParaView Windows Socket Issue

[Utkarsh Ayachit]

I am still flummoxed. To test my theory out, I pushed the hack to call
"memset" before the "recv" to git/next and tonight, miranda (the dashboard
that was showing this flaky behavior) is good, no more random test
failures!

Utkarsh


On Mon, May 12, 2014 at 8:06 PM, Utkarsh Ayachit <
utkarsh.ayachit at kitware.com> wrote:

> Yes, Windows only with MSVC compiler. Server was running on the same
> machine as well. The test takes care of starting the server and client and
> then running the actions that seem to cause the failures -- anything with
> large data movements is what I am tending to believe, but not sure how true
> that is.
>
>
> On Mon, May 12, 2014 at 7:55 PM, Scott, W Alan <wascott at sandia.gov> wrote:
>
>>  Windows, correct?  Visual compiler?  Where are you running the server?
>>
>>
>>
>>
>>
>>
>>
>> *From:* Utkarsh Ayachit [mailto:utkarsh.ayachit at kitware.com]
>> *Sent:* Monday, May 12, 2014 5:54 PM
>> *To:* Scott, W Alan
>> *Cc:* ParaView Developers
>> *Subject:* Re: [EXTERNAL] [Paraview-developers] ParaView Windows Socket
>> Issue
>>
>>
>>
>> It is true that it seems like it;s failing only on this machine. If you
>> want to test it, just check out git/next and build it as Release or
>> RelWithDebInfo and then run the following test:
>>
>>
>>
>> ctest -R pvcs.RenderNan
>>
>>
>>
>> It hangs randomly for me.
>>
>>
>>
>> Thanks
>>
>> Utkarsh
>>
>>
>>
>> On Mon, May 12, 2014 at 5:31 PM, Scott, W Alan <wascott at sandia.gov>
>> wrote:
>>
>> Timing?  Could you have hardware that is becoming flaky?  Try on another
>> box?
>>
>>
>>
>> If you want to send me bits, I could give it a try?
>>
>>
>>
>> Alan
>>
>>
>>
>> *From:* Paraview-developers [mailto:
>> paraview-developers-bounces at paraview.org] *On Behalf Of *Utkarsh Ayachit
>> *Sent:* Monday, May 12, 2014 3:11 PM
>> *To:* ParaView Developers
>> *Subject:* [EXTERNAL] [Paraview-developers] ParaView Windows Socket Issue
>>
>>
>>
>> I am running into a strange issue with sockets on Windows. Here are the
>> symptoms:
>>
>>
>>
>> + VS9 (VS2008), 64 bit, Windows 7
>>
>> + Fails only with Release or RelWithDebInfo builds (never in Debug)
>>
>> + client-server tests fail when receiving large chunks of data (although
>> sometimes it happens for small chunks too)
>>
>> + "recv" call fails with error WSAEFAULT (most of the time). I am assured
>> that the corresponding "send" does indeed happen. In other words, not a
>> race condition or some other deadlock.
>>
>> + I can overcome the problem by simply doing a memset(buffer, 0,
>> lengthofbuffer) before the "recv" call.
>>
>>
>>
>> I already tried chunking the recv is 8KB chunks, doesn't help. Has anyone
>> ever seen something like this, or has any ideas that could work?
>>
>>
>>
>> Thanks
>>
>> Utkarsh
>>
>>
>>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/paraview-developers/attachments/20140513/849a7d94/attachment-0001.html>