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[tvm4j] add GraphRuntime #1472

Merged
merged 2 commits into from
Jul 24, 2018
Merged

[tvm4j] add GraphRuntime #1472

merged 2 commits into from
Jul 24, 2018

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yzhliu
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@yzhliu yzhliu commented Jul 22, 2018

GraphRuntime for Java.

@tqchen
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tqchen commented Jul 23, 2018

please request reviews

*/
public static GraphModule create(String graphJson, Module libmod, TVMContext ctx) {
Module graphModule = null;
if (ctx.deviceType >= RPC.RPC_SESS_MASK) {
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Maybe combine these into if P and Q instead of two separate if statements?

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I feel the current statement is more readable, the ifs inside are more about assert, rather than control flows.

value.copyTo(input);
}
fsetInput.pushArg(key).pushArg(input).invoke();
return this;
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Is there a particular use for returning this?

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a common design in Java world, which enable users to do something like g.setInputs(..).setInputs(...).run()

from tvm.contrib import graph_runtime

def dump_graph_lib(target_dir):
n = 4
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I get that this is math inside of a test script but perhaps we want to avoid using single-letter variable names? We could change to dim or something like that.

n = 4
A = tvm.placeholder((n,), name='A')
B = tvm.compute(A.shape, lambda *i: A(*i) + 1.0, name='B')
s = tvm.create_schedule(B.op)
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sched or schedule

@@ -57,8 +57,7 @@ public NDArrayBase copyTo(NDArrayBase target) {
/**
* Release the NDArray memory.
* <p>
* We highly recommend you to do this manually since the GC strategy is lazy
* and `finalize()` is not guaranteed to be called when GC happens.
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Is there a particular reason why this has been deleted? This info might be useful to keep.

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actually finalize() is guaranteed to be called finally. it just cannot be called immediately.

*/

package ml.dmlc.tvm;

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Perhaps include a brief explanation as you did with other classes.

* @param value The input value.
* @return self.
*/
public GraphModule setInput(int key, NDArray value) {
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@kevinthesun kevinthesun Jul 23, 2018

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Do we want to support batch set inputs?

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I think batched inputs can still be described as NDArray.

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But here we only supports a single input key. We may want a map for multiple inputs.

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you can do g.setInput(k1, v1).setInput(k2, v2).setInput...

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Yes. User can always set input one by one. I'm thinking whether we can make the API simpler. Maybe we can do this later if it requires significant extra work.

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@yzhliu yzhliu Jul 23, 2018

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I prefer not to provide another two functions� setInput(Map<String, NDArray>) and setInput(Map<Integer, NDArray>) since now users need to construct Map using Map.put(k, v) first - which is actually less convenient.

* @param value The input value
* @return self.
*/
public GraphModule setInput(String key, NDArray value) {
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Combine these two setInputs using a generic method? It seems the bodies are the same.

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@yzhliu yzhliu Jul 23, 2018

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how... the types are different.

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@zhiics zhiics Jul 23, 2018

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Never mind. I was thinking sth like, public <T> GraphModule setInput(T key, NDArray value). Not quite familiar with JAVA...

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in java, if we do in this way we have to check and cast T to int/String manually before passing to pushArg. Moreover, users will get confused with what type is exactly supported for key since it is not specified in the function signature.

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yzhliu commented Jul 23, 2018

@markrogersjr @kevinthesun @zhiics Thanks for reviewing. Once you feel it is good to merge, please explicitly approve it: https://docs.tvm.ai/contribute/code_review.html#approve-and-request-changes-explicitly

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LGTM

@tqchen tqchen merged commit 5643846 into apache:master Jul 24, 2018
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tqchen commented Jul 24, 2018

Thanks @yzhliu @zhiics @kevinthesun @markrogersjr this is now merged.

tqchen pushed a commit to tqchen/tvm that referenced this pull request Aug 4, 2018
sergei-mironov pushed a commit to sergei-mironov/tvm that referenced this pull request Aug 8, 2018
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5 participants