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AMD Invalid Result while running xmr-stak-amd on Macbook Pro mid-2015
Hi
I'm trying to use xmr-stak-amd to mine Monero on couple Macbook Pro mid-2015. I'm getting decent hashrate - 233 h/s while using 3 CPU threads and 1 GPU thread. GPU thread hash rate is ~100 h/s. The problem is that every result calculated by GPU is invalid.
$ ./xmr-stak -V Version: xmr-stak/2.1.0/8e38483/dev/mac/amd-cpu/aeon-monero/20
amd.txt contents:
/*
* GPU configuration. You should play around with intensity and worksize as the fastest settings will vary.
* index - GPU index number usually starts from 0
* intensity - Number of parallel GPU threads (nothing to do with CPU threads)
* worksize - Number of local GPU threads (nothing to do with CPU threads)
* affine_to_cpu - This will affine the thread to a CPU. This can make a GPU miner play along nicer with a CPU miner.
* strided_index - switch memory pattern used for the scratch pad memory
* true = use 16byte contiguous memory per thread, the next memory block has offset of intensity blocks
* false = use a contiguous block of memory per thread
* "gpu_threads_conf" :
* [
* { "index" : 0, "intensity" : 1000, "worksize" : 8, "affine_to_cpu" : false, "strided_index" : true },
* ],
*/
"gpu_threads_conf" : [
// gpu: AMD Radeon R9 M370X Compute Engine memory:384
// compute units: 10
{ "index" : 1,
"intensity" : 160, "worksize" : 8,
"affine_to_cpu" : false, "strided_index" : true
},
],
/*
* Platform index. This will be 0 unless you have different OpenCL platform - eg. AMD and Intel.
*/
"platform_index" : 0,
Comments
XMR-Stak is now supporting CPU, AMD and NVIDIA GPUs in a unified miner.
The new repository is https://github.com/fireice-uk/xmr-stak.
The old version is retired and unsupported.
That's right Aussie, but from his post it seems he is actually using xmr-stak. I would suggest using an intensity of 32, 64, 128, 256 or 1024 as these seem to work more consistently. I know it's been said it only needs to be a multiple of 8 but other multiples seems to be error prone.