[Starpu-devel] [tracking invalid/unregistered data]

[Maxim Abalenkov <maxim.abalenkov@gmail.com>]

Dear all,

I need help please in understanding, what exactly is going on here:

[starpu][_starpu_task_submit_head][assert failure] data 0x7fc98dc06b50 is invalid (was it already unregistered?)

Assertion failed: (handle->magic == 42), function _starpu_task_submit_head, file core/task.c, line 590.
Abort trap: 6

I submit the task in the following way:

    // Pointer to diagonal tile in panel u

    struct starpu_data_descr *pu = &(A.tile_desc[u*(A.mt+u+1)]);
    
    // Set access modes for tiles in panel u
    for (int i = 0; i < A.mt; i++) {
        (pu+i)->mode = STARPU_RW;
    }

    // Set access mode for pivots segment
    dSeg.mode = STARPU_W;

    int retval = starpu_task_insert(
       &core_starpu_codelet_zswap,
        STARPU_DATA_MODE_ARRAY,  pu,    A.mt,
        STARPU_VALUE,           &A,     sizeof(plasma_desc_t),
        STARPU_VALUE,           &j,     sizeof(int),
        STARPU_VALUE,           &k,     sizeof(int),
        STARPU_VALUE,           &kb,    sizeof(int),
        STARPU_PRIORITY,        prio,
        0);

    STARPU_CHECK_RETURN_VALUE(retval,
        "core_starpu_zswap: starpu_task_insert() failed");

Here is my codelet:

// StarPU codelet

static struct starpu_codelet core_starpu_codelet_zswap =

{

    .cpu_func       =  core_starpu_cpu_zswap,

    .cpu_funcs_name ={"core_starpu_cpu_zswap"},

    .nbuffers       =  STARPU_VARIABLE_NBUFFERS,

    .name           = "zswap"

};

The code crashes even before reaching the relevant CPU function.

—

Best wishes,

Maxim

Maxim Abalenkov \\ maxim.abalenkov@gmail.com
+44 7 486 486 505 \\ http://mabalenk.gitlab.io