Re: == Bitcoin challenge transaction: ~100 BTC total bounty to solvers! ==UPDATED==

i just see issue at your github, same stuck at error with gtx 750, maybe problem of hashtable size, check it

Hashtable for the CPU. What does ptxas info say?

whats your makefile setting for cuda 8

Edit the makefile and set up the good CUDA SDK path and appropriate compiler for nvcc.

Code:

CXX = g++
CUDA = /usr/local/cuda-8.0
CXXCUDA = /usr/bin/g++-4.8
NVCC = $(CUDA)/bin/nvcc

GPU resources, unfortunately, also have their limitations. Maximum number of 32-bit registers per thread. It is 63 for cc 2.x and 3.0, 128 for cc 1.x and 255 for cc 3.5.
https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#features-and-technical-specifications__technical-specifications-per-compute-capability