RE: [AMBER] pmemd.cuda error: launch timeout..

From: Scott Le Grand <>
Date: Tue, 8 Jun 2010 10:15:37 -0700

This is not happening on your C1060 chips, is it?

-----Original Message-----
From: [] On Behalf Of Sasha Buzko
Sent: Tuesday, June 08, 2010 09:54
To: AMBER Mailing List
Subject: [AMBER] pmemd.cuda error: launch timeout..

Hi all,
I'm testing pmemd.cuda on a GTX480 with a moderately sized system in
explicit solvent (~60k atoms). Every once in a while, a run is
interrupted by this error message:
"Error: the launch timed out and was terminated launching kernel
kPMEGetGridWeights". No other error messages are generated.

The same system and input files are used by the cpu version with no
issues. The process doesn't seem to be running out of memory, and no
hardware issue appears to be involved.
Below is the deviceQuery output.

Thanks for any suggestions


[sasha.redwood release]$ ./deviceQuery
./deviceQuery Starting...

 CUDA Device Query (Runtime API) version (CUDART static linking)

There is 1 device supporting CUDA

Device 0: "GeForce GTX 280"
  CUDA Driver Version: 3.0
  CUDA Runtime Version: 3.0
  CUDA Capability Major revision number: 1
  CUDA Capability Minor revision number: 3
  Total amount of global memory: 1073020928 bytes
  Number of multiprocessors: 30
  Number of cores: 240
  Total amount of constant memory: 65536 bytes
  Total amount of shared memory per block: 16384 bytes
  Total number of registers available per block: 16384
  Warp size: 32
  Maximum number of threads per block: 512
  Maximum sizes of each dimension of a block: 512 x 512 x 64
  Maximum sizes of each dimension of a grid: 65535 x 65535 x 1
  Maximum memory pitch: 2147483647 bytes
  Texture alignment: 256 bytes
  Clock rate: 1.30 GHz
  Concurrent copy and execution: Yes
  Run time limit on kernels: Yes
  Integrated: No
  Support host page-locked memory mapping: Yes
  Compute mode: Default (multiple host
threads can use this device simultaneously)

deviceQuery, CUDA Driver = CUDART, CUDA Driver Version = 4243455, CUDA
Runtime Version = 3.0, NumDevs = 1, Device = GeForce GTX 280


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Received on Tue Jun 08 2010 - 10:30:03 PDT
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