GPU_PTX SB+membar.gl+po-p0:p1-xgys
"Mgl-d-Wg-Rs Fr-w-s Po-d-Ws-Rg Fr-w-g"

{}

 P0                 | P1                 ;
 mov.s32 r0, 1      | mov.s32 r0, 1      ;
 st.cg.s32 [r1], r0 | st.cg.s32 [r1], r0 ;
 membar.gl          | ld.cg.s32 r2, [r3] ;
 ld.cg.s32 r2, [r3] |                    ;

exists (0:r2=0 /\ 1:r2=0)
(device (kernel (cta (warp P0) (warp P1))))
x:global; y:local
Generated assembler
//START _litmus_P1
	mov.s32 sr01, 1 ;
	st.cg.s32 [sr11], sr01 ;
	ld.cg.s32 sr21, [sr31] ;
//START _litmus_P0
	mov.s32 sr00, 1 ;
	st.cg.s32 [sr10], sr00 ;
	membar.gl ;
	ld.cg.s32 sr20, [sr30] ;

Binary '/tmp/dir10931e.tmp/SB+membar.gl+po-p0:p1-xgys-0.exe' successfully loaded
Specification clusters: 2
Specification: [[(629, 2, 'R8'), (631, 3, 'R0')], [(705, 2, 'R8'), (704, 3, 'R0')]]
Cluster 0: OK
Cluster 1: OK
!!SUCCESS!!
Test SB+membar.gl+po-p0:p1-xgys Allowed
Histogram (4 states)
16    *>0:r2=0; 1:r2=0;
32893 :>0:r2=1; 1:r2=0;
1948  :>0:r2=0; 1:r2=1;
15143 :>0:r2=1; 1:r2=1;
Ok

Witnesses
Positive: 16, Negative: 49984
Condition exists (0:r2=0 /\ 1:r2=0) is validated
Observation SB+membar.gl+po-p0:p1-xgys Sometimes 16 49984
Time SB+membar.gl+po-p0:p1-xgys 2.01

  -- device info --
Name:                           GeForce GTX 750 Ti
Major revision number:          5
Minor revision number:          0
Total global memory:            2147287040
Total shared memory per block:  49152
Number of multiprocessors:      5

Machine: formal
Revision 1383, version 5.01 GPU_PTX experimental backend
Command line: ./litmus -mach GTX750.cfg -a 8 -gpu-verf-comp true big_bucket/SB+membar.gl+po-p0:p1-xgys-0.litmus -s 50000
Parameters
#ifndef SIZE_OF_TEST
#define SIZE_OF_TEST 50000
#endif
#ifndef NUMBER_OF_RUN
#define NUMBER_OF_RUN 1
#endif
/* cc options: -arch=sm_50 */
/* barrier: user */
/* speedcheck: no */
/* gpu_general_bc: true */
/* gpu_mem_stress: true */
/* gpu-rand-threads: true */
/* gpu_cuda: true */
/* gpu_gen_addr: true */
/* gpu_cvt_global_to_gen: true */
/* gpu_cvt_shared_to_gen: true */
/* gpu_max_ctas: 5 */
/* gpu_min_ctas: 4 */
/* gpu_max_threads: 256 */
/* gpu_min_threads: 128 */