ztellman / calx Goto Github PK

Hello.
Your example in the readme states:
(enqueue-kernel :square 3 a b)
where the 3 refers to the global size of the problem, as in the gid in:
int gid = get_global_id(0)

I would like to write a kernel with 2 (or 3) dimensions, say with
int col = get_global_id(0);
int row = get_global_id(1);

Problem is, I do not see how to state the sizes of each of these(col, row), as you did for gid.
I guess the function enqueue-kernel would need to extend or have a Ndimentional version of it?
Also, the function enqueue-kernel does not seem to be in the doc file you point to in the read me.

How would you approach a 2 problem with calx?
I'm thinking of a 1D data buffer, which, via it's layout, encodes a 2D data, then I'd apply mod(gid,rowWidth) for work on rows and floor(gid/colHight) for columns?

Many thanks!

Ludo

Hello.

I note that the file calx/src/calx/core.clj contains the 'local' function defined as:

(defn local [size]
  (CLKernel$LocalSize. size))

I'm designing a kernel for which I will want to set the local work size myself, however, I do not see how I can set this veritable. I attempted to set this within the 'let' as per the example below, however this has no effect. Placing the 'local' function call anywhere else fails with 'Unable to resolve symbol: sourceOpenCL2'.
How could I put this option into effect? A side question, is there a public repo that uses calx that I could use a learning material?

I know the local size is not changing (stays as 256) because of a kernel with something like this:
int lid = get_local_id(0); ....
outvector[gid] = lid ; //The output values loop round 255

Kind regards.

Ludo

(use 'calx)

(def source
  "__kernel void square (
       __global const float *a,
       __global float *b) {
    int gid = get_global_id(0);
    b[gid] = a[gid] * a[gid];
  }")

(with-cl
  (with-program (compile-program source)
    (let [a (wrap [1 2 3] :float32)
          b (mimic a)]
      (local 64)         ;;This seem to have no effect
      (enqueue-kernel :square 3 a b)
      (enqueue-read b))))

Hey Zach,

I'm trying to update your calx code to work with 1.3. The binding vars stuff is pretty easy to fix but the import-fn stuff is giving me problems.

Its giving me:
;user=> (clojure.repl/pst)
NullPointerException
java.util.concurrent.ConcurrentHashMap.get (ConcurrentHashMap.java:768)
clojure.lang.Namespace.find (Namespace.java:188)
clojure.core/find-ns (core.clj:3657)
clojure.core/the-ns (core.clj:3689)
clojure.core/intern (core.clj:5561)
potemkin.namespace/import-fn (namespace.clj:16)
clojure.lang.Var.invoke (Var.java:409)
clojure.lang.Var.applyTo (Var.java:518)
clojure.lang.Compiler.macroexpand1 (Compiler.java:6320)
clojure.lang.Compiler.macroexpand (Compiler.java:6381)
clojure.lang.Compiler.macroexpand (Compiler.java:6383)
clojure.lang.Compiler.eval (Compiler.java:6449)

I tried using the most recent version of potemkin but I'm still getting the same error. You know what's going on here?

Best,
Brent

java.lang.IllegalArgumentException: No implementation of method: :sizeof of protocol: #'gloss.core.protocols/Writer found for class: clojure.lang.Keyword (cl.clj:0)

when running the example from README.