Quote from: restless on May 12, 2016, 07:11:43 AM

Trying to mine with myr-gr and release 80 gives
[2016-05-12 10:08:39] Stratum difficulty set to 1
Cuda error in func 'myriadgroestl_cpu_hash' at line 322 : unspecified launch fai
lure.
There http://crypto.office-on-the.net:12351/static/

PC1 - win7 x64, 1x 750Ti - driver 361.75 - works
PC2 - win8.1, 2x 750Ti, driver 361.75 - the error above :/

PS: damn it, the error was due to -i 22
removed -i - it works

Any hint how to see the default value of -i ?

Check the source code:

Quote from: https://github.com/sp-hash/ccminer/blob/windows/myriadgroestl.cpp#L43

uint32_t throughput = device_intensity(device_map[thr_id], __func__, 1 << 20);

The default intensity if I'm not mistaken is 20.

Or you can check the GPU memroy usage with gpu-z or something without the -i parameter then check it with a specified -i parameter like -i 18 and see if the memory usage is lower or higher.
If the memory usage with -i 18 is lower then without -i then the default -i is higher. If you reach the same memory usage then you have found the default intensity (doesn't work for algos with very little memory usage).