(cuda-gdb) cuda device sm warp lane block thread
block (0,0,0), thread (0,0,0), device 0, sm 0, warp 0, lane 0 
(cuda-gdb) cuda kernel block thread
kernel 1, block (0,0,0), thread (0,0,0)
(cuda-gdb) cuda kernel
kernel 1

(cuda-gdb) cuda device 0 sm 1 warp 2 lane 3
[Switching focus to CUDA kernel 1, grid 2, block (8,0,0), thread
(67,0,0), device 0, sm 1, warp 2, lane 3]
374 int totalThreads = gridDim.x * blockDim.x;

(cuda-gdb) cuda thread (15)
[Switching focus to CUDA kernel 1, grid 2, block (8,0,0), thread
(15,0,0), device 0, sm 1, warp 0, lane 15]
374 int totalThreads = gridDim.x * blockDim.x;

(cuda-gdb) cuda block 1 thread 3
[Switching focus to CUDA kernel 1, grid 2, block (1,0,0), thread (3,0,0), 
device 0, sm 3, warp 0, lane 3]
374 int totalThreads = gridDim.x * blockDim.

(cuda-gdb) break my_function
(cuda-gdb) break my_class::my_method

(cuda-gdb) break int my_templatized_function<int>(int)

(cuda-gdb) set demangle-style none
(cuda-gdb) info function my_function_name
(cuda-gdb) set demangle-style auto

(cuda-gdb) break my_file.cu:185

(cuda-gdb) set cuda break_on_launch application

(cuda-gdb) print &array
$1 = (@shared int (*)[0]) 0x20 
(cuda-gdb) print array[0]@4
$2 = {0, 128, 64, 192}

(cuda-gdb) print *(@shared int*)0x20
$3 = 0
(cuda-gdb) print *(@shared int*)0x24
$4 = 128
(cuda-gdb) print *(@shared int*)0x28
$5 = 64

info cuda devices or …
info cuda sms SM
info cuda threads
info cuda threads breakpoint all
info cuda thredas breakpoint 2 lane 1


# 设备
devices

# sm
sms

# warps
warps

# lanes
lanes

# kernels
查看当前激活的kernel

blocks
当前kernel 所有激活的block

threads
当前kernel所有激活的线程

launch trace
查看当前kernel的父亲kernel

launch children
查看当前kernel的子kernel


contexts
查看所有的context

(cuda-gdb) x/4i $pc-32
   0xa689a8 <acos_main(acosParams)+824>: MOV R0, c[0x0][0x34]
   0xa689b8 <acos_main(acosParams)+840>: MOV R3, c[0x0][0x28]
   0xa689c0 <acos_main(acosParams)+848>: IMUL R2, R0, R3
=> 0xa689c8 <acos_main(acosParams)+856>: MOV R0, c[0x0][0x28]

(cuda-gdb) info registers $R0 $R1 $R2 $R3
R0             0xf0     240
R1             0xfffc48 16776264
R2             0x7800   30720
R3             0x80     128

{
    int i = 0;
    char host[256];
    printf("PID %d on node %s is ready for attach\n",
            getpid(), host);
    fflush(stdout);
    while (0 == i) {
        sleep(5);
    }
}

mpirun -np 2 -host nv1,nv2 a.out

cuda-gdb --pid 5488