Allow kernels to use global working memory (Trac #679)

[pkienzle]

Some kernels, such as that attached to #809, require significant working memory in order to run.

Allow kernels to declare the amount of memory they need, and provide them with an initialization function (in python) that can be called before the kernel itself is called. Provide the OpenCL context if available so that initialization can use the GPU.

Migrated from http://trac.sasview.org/ticket/679

{
    "status": "new",
    "changetime": "2016-10-14T15:34:41",
    "_ts": "2016-10-14 15:34:41.313111+00:00",
    "description": "Some kernels, such as that attached to #678, require significant working memory in order to run.\n\nAllow kernels to declare the amount of memory they need, and provide them with an initialization function (in python) that can be called before the kernel itself is called.  Provide the OpenCL context if available so that initialization can use the GPU.",
    "reporter": "pkienzle",
    "cc": "",
    "resolution": "",
    "workpackage": "SasView Bug Fixing",
    "time": "2016-10-04T00:02:22",
    "component": "SasView",
    "summary": "Allow kernels to use global working memory",
    "priority": "major",
    "keywords": "",
    "milestone": "SasView Next Release +1",
    "owner": "",
    "type": "enhancement"
}

[pkienzle]

Trac update at 2016/10/14 15:34:41: pkienzle commented:

Could be used for performance tuning: http://trac.sasview.org/ticket/782, http://trac.sasview.org/ticket/783