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            :   2.3088 ms ( 10.08 GFLOP/s 122.4 GB/s) [L2 error 0.000000]
        coo_flat_tex        :   2.2041 ms ( 10.56 GFLOP/s 128.3 GB/s) [L2 error 0.000000]
        csr_scalar          :   5.9811 ms (  3.89 GFLOP/s  39.8 GB/s) [L2 error 0.000000]
        csr_scalar_tex      :   4.7886 ms (  4.86 GFLOP/s  49.7 GB/s) [L2 error 0.000000]
        csr_vector          :   1.9227 ms ( 12.10 GFLOP/s 123.7 GB/s) [L2 error 0.000000]
        csr_vector_tex      :   1.9049 ms ( 12.22 GFLOP/s 124.9 GB/s) [L2 error 0.000000]
        Refusing to convert to DIA format
        Refusing to convert to ELL format
        hyb                 :   0.9894 ms ( 23.52 GFLOP/s 240.6 GB/s) [L2 error 0.000000]
        hyb_tex             :   1.1314 ms ( 20.57 GFLOP/s 210.4 GB/s) [L2 error 0.000000]

real    0m16.403s
user    0m7.652s
sys     0m8.684s