GPU_PTX IRRWIW+po+membar.gl-p0::p1:p3::p2-xgyg
"Rf-c-g Po-d-Rg-Rg Fr-c-g Rf-c-g Mgl-d-Rg-Wg Ws-c-g"

{}

 P0                 | P1                 | P2                 | P3                 ;
 mov.s32 r0, 2      | ld.cg.s32 r0, [r1] | mov.s32 r0, 1      | ld.cg.s32 r0, [r1] ;
 st.cg.s32 [r1], r0 | ld.cg.s32 r2, [r3] | st.cg.s32 [r1], r0 | membar.gl          ;
                    |                    |                    | mov.s32 r2, 1      ;
                    |                    |                    | st.cg.s32 [r3], r2 ;

exists (0::x=2 /\ 1:r0=2 /\ 1:r2=0 /\ 3:r0=1)
(device (kernel (cta (warp P0)) (cta (warp P1) (warp P3)) (cta (warp P2))))
x:global; y:global
Generated assembler
//START _litmus_P3
	ld.cg.s32 sr03, [sr13] ;
	membar.gl ;
	mov.s32 sr23, 1 ;
	st.cg.s32 [sr33], sr23 ;
//START _litmus_P2
	mov.s32 sr02, 1 ;
	st.cg.s32 [sr12], sr02 ;
//START _litmus_P1
	ld.cg.s32 sr01, [sr11] ;
	ld.cg.s32 sr21, [sr31] ;
//START _litmus_P0
	mov.s32 sr00, 2 ;
	st.cg.s32 [sr10], sr00 ;

Binary '/tmp/dircc0b7b.tmp/IRRWIW+po+membar.gl-p0::p1:p3::p2-xgyg-0.exe' successfully loaded
Specification clusters: 4
Specification: [[(534, 3, 'R4'), (531, 2, 'R8')], [(573, 2, 'R8')], [(616, 3, 'R5'), (614, 3, 'R4')], [(663, 2, 'R8')]]
Cluster 0: OK
Cluster 1: OK
Cluster 2: OK
Cluster 3: OK
!!SUCCESS!!
Test IRRWIW+po+membar.gl-p0::p1:p3::p2-xgyg Allowed
Histogram (24 states)
13542 :>1:r0=0; 1:r2=0; 3:r0=0; 0::x=1;
1583  :>1:r0=1; 1:r2=0; 3:r0=0; 0::x=1;
6884  :>1:r0=2; 1:r2=0; 3:r0=0; 0::x=1;
2838  :>1:r0=0; 1:r2=1; 3:r0=0; 0::x=1;
745   :>1:r0=1; 1:r2=1; 3:r0=0; 0::x=1;
2007  :>1:r0=2; 1:r2=1; 3:r0=0; 0::x=1;
5656  :>1:r0=0; 1:r2=0; 3:r0=1; 0::x=1;
128   :>1:r0=1; 1:r2=0; 3:r0=1; 0::x=1;
2488  :>1:r0=2; 1:r2=0; 3:r0=1; 0::x=1;
4116  :>1:r0=0; 1:r2=1; 3:r0=1; 0::x=1;
273   :>1:r0=1; 1:r2=1; 3:r0=1; 0::x=1;
2740  :>1:r0=2; 1:r2=1; 3:r0=1; 0::x=1;
3962  :>1:r0=0; 1:r2=0; 3:r0=0; 0::x=2;
432   :>1:r0=1; 1:r2=0; 3:r0=0; 0::x=2;
318   :>1:r0=2; 1:r2=0; 3:r0=0; 0::x=2;
1050  :>1:r0=0; 1:r2=1; 3:r0=0; 0::x=2;
178   :>1:r0=1; 1:r2=1; 3:r0=0; 0::x=2;
168   :>1:r0=2; 1:r2=1; 3:r0=0; 0::x=2;
270   :>1:r0=0; 1:r2=0; 3:r0=1; 0::x=2;
34    :>1:r0=1; 1:r2=0; 3:r0=1; 0::x=2;
14    *>1:r0=2; 1:r2=0; 3:r0=1; 0::x=2;
483   :>1:r0=0; 1:r2=1; 3:r0=1; 0::x=2;
60    :>1:r0=1; 1:r2=1; 3:r0=1; 0::x=2;
31    :>1:r0=2; 1:r2=1; 3:r0=1; 0::x=2;
Ok

Witnesses
Positive: 14, Negative: 49986
Condition exists (0::x=2 /\ 1:r0=2 /\ 1:r2=0 /\ 3:r0=1) is validated
Observation IRRWIW+po+membar.gl-p0::p1:p3::p2-xgyg Sometimes 14 49986
Time IRRWIW+po+membar.gl-p0::p1:p3::p2-xgyg 7.31

  -- 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/IRRWIW+po+membar.gl-p0::p1:p3::p2-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 */