dddh@node9 ~/g/cusp/performance/spmv $ time ./spmv ~/g/m/pwtk.mtx --value_type=double --device=0

Computing SpMV with 'double' values.

There are 2 devices supporting CUDA

Device 0: "GeForce GTX TITAN"
  Major revision number:                         3
  Minor revision number:                         5
  Total amount of global memory:                 6442123264 bytes

Device 1: "GeForce GTX 680"
  Major revision number:                         3
  Minor revision number:                         0
  Total amount of global memory:                 2147287040 bytes

Running on Device 0

Read matrix (/home/dddh/g/m/pwtk.mtx) with shape (217918,217918) and 11634424 entries

        coo_flat            :   2.2456 ms ( 10.36 GFLOP/s 125.9 GB/s) [L2 error 0.000000]
        coo_flat_tex        :   1.8581 ms ( 12.52 GFLOP/s 152.1 GB/s) [L2 error 0.000000]
        csr_scalar          :   6.6109 ms (  3.52 GFLOP/s  36.0 GB/s) [L2 error 0.000000]
        csr_scalar_tex      :   5.4101 ms (  4.30 GFLOP/s  44.0 GB/s) [L2 error 0.000000]
        csr_vector          :   2.0342 ms ( 11.44 GFLOP/s 117.0 GB/s) [L2 error 0.000000]
        csr_vector_tex      :   2.0535 ms ( 11.33 GFLOP/s 115.9 GB/s) [L2 error 0.000000]
        Refusing to convert to DIA format
        Refusing to convert to ELL format
        hyb                 :   1.0337 ms ( 22.51 GFLOP/s 230.3 GB/s) [L2 error 0.000000]
        hyb_tex             :   1.1678 ms ( 19.93 GFLOP/s 203.9 GB/s) [L2 error 0.000000]

real    0m16.702s
user    0m7.800s
sys     0m8.836s