“out of resource" error on certain nvidia GPUs #3
Description
Related:
zoogie/seedminer#16
https://gbatemp.net/posts/7851408/
https://gbatemp.net/posts/7879961/
https://gbatemp.net/posts/7826386/
https://gbatemp.net/posts/7851868/
https://gbatemp.net/posts/7884725/
https://gbatemp.net/posts/7881547/
I'll need testers and reports, including these info:
your GPU model, GPU RAM size, OS version, driver version.
bfcl info output
does seedminer's GPU mode throw a "out of resources" error for you? (yes I also need successful reports)
if the former is true, try the following build with two test commands, does it also say "out of resources"?
Test build:
bfCL-test-reduced-work-size-msky-lfcs-20.zip
Two test commands:
bfcl lfcs 00000007 0000 17f5c00d8b581e5e
bfcl msky c27164f2e0994db8000000007dd5c901 afcb0cc132bd2aeb8e0a6b6a841c51c0
Techy stuff
Despite what it looks like, this doesn't mean your GPU is not powerful/big enough, this program works on Intel IGPU and uses about several KB of GPU RAM, it's more like a OpenCL runtime bug from nvidia to me.
A reduced work size(from a little above 100,000,000 to 1,000,000) helped this guy with a GTX 980, so I guess this is the problem.
from OpenCL SDK document:
global_work_size
Points to an array of work_dim unsigned values that describe the number of global work-items in work_dim dimensions that will execute the kernel function. The total number of global work-items is computed as global_work_size[0] ... global_work_size[work_dim - 1].The values specified in global_work_size cannot exceed the range given by the sizeof(size_t) for the device on which the kernel execution will be enqueued. The sizeof(size_t) for a device can be determined using CL_DEVICE_ADDRESS_BITS in the table of OpenCL Device Queries for clGetDeviceInfo. If, for example, CL_DEVICE_ADDRESS_BITS = 32, i.e. the device uses a 32-bit address space, size_t is a 32-bit unsigned integer and global_work_size values must be in the range 1 .. 2^32 - 1. Values outside this range return a CL_OUT_OF_RESOURCES error.
nvidia runtime announces GTX 980's address bits = 64, and 100,000,000 is no where near that.