GPU_PTX S+membar.gl+membar.cta-p0::p1-xgyg
"Mgl-d-Wg-Wg Rf-c-g Mcta-d-Rg-Wg Ws-c-g"

{}

 P0                 | P1                 ;
 mov.s32 r0, 2      | ld.cg.s32 r0, [r1] ;
 st.cg.s32 [r1], r0 | membar.cta         ;
 membar.gl          | mov.s32 r2, 1      ;
 mov.s32 r2, 1      | st.cg.s32 [r3], r2 ;
 st.cg.s32 [r3], r2 |                    ;

exists (0::x=2 /\ 1:r0=1)
(device (kernel (cta (warp P0)) (cta (warp P1))))
x:global; y:global
Generated assembler
//START _litmus_P1
	ld.cg.s32 sr01, [sr11] ;
	membar.cta ;
	mov.s32 sr21, 1 ;
	st.cg.s32 [sr31], sr21 ;
//START _litmus_P0
	mov.s32 sr00, 2 ;
	st.cg.s32 [sr10], sr00 ;
	membar.gl ;
	mov.s32 sr20, 1 ;
	st.cg.s32 [sr30], sr20 ;

Binary '/tmp/dir5ea664.tmp/S+membar.gl+membar.cta-p0::p1-xgyg-0.exe' successfully loaded
Specification clusters: 2
Specification: [[(424, 3, 'R4'), (421, 2, 'R12')], [(478, 2, 'R10'), (481, 2, 'R12')]]
Cluster 0: OK
Cluster 1: OK
!!SUCCESS!!
Test S+membar.gl+membar.cta-p0::p1-xgyg Allowed
Histogram (3 states)
33396 :>1:r0=0; 0::x=1;
2645  :>1:r0=1; 0::x=1;
13959 :>1:r0=0; 0::x=2;
No

Witnesses
Positive: 0, Negative: 50000
Condition exists (0::x=2 /\ 1:r0=1) is NOT validated
Observation S+membar.gl+membar.cta-p0::p1-xgyg Never 0 50000
Time S+membar.gl+membar.cta-p0::p1-xgyg 3.78

  -- device info --
Name:                           GeForce GT 540M
Major revision number:          2
Minor revision number:          1
Total global memory:            1072889856
Total shared memory per block:  49152
Number of multiprocessors:      2

Machine: DeepThought3
Revision 1371, version 5.01 GPU_PTX experimental backend
Command line: ./litmus -mach GTX540m.cfg -a 8 -gpu-verf-comp true big_bucket/S+membar.gl+membar.cta-p0::p1-xgyg-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_21 */
/* 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: 4 */
/* gpu_min_ctas: 4 */
/* gpu_max_threads: 128 */
/* gpu_min_threads: 128 */