visc_gemm_ptx fail fixed. It was due to a problem with runtime and with PTX pass

generating multiplication of local and global dim statements even in case of 1
level node, when local dim is null
M    llvm/projects/visc-rt/visc-rt.cpp
M    llvm/lib/Transforms/DFG2LLVM_NVPTX/DFG2LLVM_NVPTX.cpp