Topic: Cudaminer linux floating point exception / failed to validate (nvidia grid k520) (Read 1419 times)

Yeah, same here (on amazon ec2). Had to downgrade too to get it working.

Cudaminer from Dec 1 doesn't work, at least on that hardware.  Downgrading to Nov 20 version fixed it for me.  Autotune also functions, and spat out K8x24 for me.  I'm running like so:

My amazon experimental setup, getting about 180kH/s combined GPU/CPU (which is obviously not going to turn a profit):

cudaminer -a scrypt -o $POOL_URL -u $POOL_USER -p $POOL_PASS -C1 -H1 -l K8x24
minerd -u $POOL_USER -p $POOL_PASS -o $POOL_URL -t 6

I’ve been able to compile the miner and install all the drivers and have it running, but it results in 2 things both which don’t work.

Without auto tune:
[2013-12-05 06:47:09] 1 miner threads started, using 'scrypt' algorithm.
[2013-12-05 06:47:09] Starting Stratum on stratum+tcp://stratum.hashfaster.com:3333
[2013-12-05 06:47:09] Stratum detected new block
[2013-12-05 06:47:12] GPU #0: GRID K520 with compute capability 3.0
[2013-12-05 06:47:12] GPU #0: interactive: 0, tex-cache: 2D, single-alloc: 1
[2013-12-05 06:47:12] GPU #0: using launch configuration K70x4
[2013-12-05 06:47:12] GPU #0: GRID K520 result does not validate on CPU!
[2013-12-05 06:47:13] GPU #0: GRID K520 result does not validate on CPU!
[2013-12-05 06:47:15] GPU #0: GRID K520 result does not validate on CPU!
[2013-12-05 06:47:15] GPU #0: GRID K520 result does not validate on CPU!
[2013-12-05 06:47:16] GPU #0: GRID K520 result does not validate on CPU!
[2013-12-05 06:47:16] GPU #0: GRID K520 result does not validate on CPU!
[2013-12-05 06:47:17] GPU #0: GRID K520 result does not validate on CPU!

And with auto tune:
[2013-12-05 06:51:08] 1 miner threads started, using 'scrypt' algorithm.
[2013-12-05 06:51:08] Starting Stratum on stratum+tcp://stratum.hashfaster.com:3333
[2013-12-05 06:51:08] Binding thread 0 to cpu 0
[2013-12-05 06:51:09] Stratum detected new block
[2013-12-05 06:51:12] GPU #0: GRID K520 with compute capability 3.0
[2013-12-05 06:51:12] GPU #0: interactive: 0, tex-cache: 0 , single-alloc: 0
[2013-12-05 06:51:13] GPU #0: Performing auto-tuning (Patience…)
[2013-12-05 06:51:13] GPU #0: maximum warps: 977
[2013-12-05 06:51:13] GPU #0: 0.00 khash/s with configuration K0x0
[2013-12-05 06:51:13] GPU #0: using launch configuration K0x0
Floating point exception
[ec2-user@ip-172-31-24-209 CudaMiner]$

I’ve tried to manually specify launch configs in the K ranges but it still results in a does no validate error.

Thank you very much for your time, and I hope someone is able to help me.