GPU_PTX mp_L1+membar.gls-p0::p1-xgyg

{}

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

exists (1:r0=1 /\ 1:r2=0)
(device (kernel (cta (warp P0)) (cta (warp P1))))
y:global; x:global
Generated assembler
//START _litmus_P1
	ld.ca.s32 sr01, [sr11] ;
	membar.gl ;
	ld.ca.s32 sr21, [sr31] ;
//START _litmus_P0
	mov.s32 sr00, 1 ;
	st.cg.s32 [sr10], sr00 ;
	membar.gl ;
	mov.s32 sr20, 1 ;
	st.cg.s32 [sr30], sr20 ;

Binary '/tmp/dir2c8714.tmp/mp-L1+membar.gls.exe' successfully loaded
Specification clusters: 2
Specification: [[(356, 1, 'R0'), (354, 1, 'R4')], [(414, 2, 'R8'), (417, 2, 'R10')]]
Cluster 0: OK
Cluster 1: OK
!!SUCCESS!!
Test mp-L1+membar.gls Allowed
Histogram (4 states)
3612  :>1:r0=0; 1:r2=0;
187   *>1:r0=1; 1:r2=0;
85846 :>1:r0=0; 1:r2=1;
10355 :>1:r0=1; 1:r2=1;
Ok

Witnesses
Positive: 187, Negative: 99813
Condition exists (1:r0=1 /\ 1:r2=0) is validated
Observation mp-L1+membar.gls Sometimes 187 99813
Time mp-L1+membar.gls 87.25

  -- device info --
Name:                           Tesla C2075
Major revision number:          2
Minor revision number:          0
Total global memory:            5636554752
Total shared memory per block:  49152
Number of multiprocessors:      14

Machine: fractus
Revision 1365M, version 5.01 GPU_PTX experimental backend
Command line: ./litmus -mach TeslaC2075.cfg -gpu-verf-comp true ASPLOS/mp-L1+membar.gls.litmus -a 2
Parameters
#ifndef SIZE_OF_TEST
#define SIZE_OF_TEST 100000
#endif
#ifndef NUMBER_OF_RUN
#define NUMBER_OF_RUN 1
#endif
/* cc options: -arch=sm_20 */
/* 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: 12 */
/* gpu_min_ctas: 9 */
/* gpu_max_threads: 512 */
/* gpu_min_threads: 128 */