Add TensorFlow examples - ResNet50 and BERT models

[Satya1493]

Signed-off-by: Satyanaraya Illa satyanaraya.illa@intel.com

Description of the changes

TensorFlow examples for ResNet50 and BERT models. The samples run inference using pre-trained models.

How to test this PR?

Please follow steps present at tensorflow/README.md

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This change is 

[dimakuv]

Reviewed 7 of 7 files at r1, all commit messages.
Reviewable status: all files reviewed, 5 unresolved discussions, not enough approvals from maintainers (2 more required), not enough approvals from different teams (2 more required, approved so far: ) (waiting on @Satya1493)

a discussion (no related file):
I verified that this PR is the same as the previous #7, bar the changes to fs.mounts and SGX_SIGNER_KEY plus Michal's comments.

Generally looks good to me. Only a couple comments to address.

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tensorflow/BERT/Makefile, line 45 at r1 (raw file):

	gramine-sgx-sign \
		--manifest $< \
		--output $@

We still need to use SGX_SIGNER_KEY in this PR. See our discussion in #20. We'll remove all those SGX_SIGNER_KEY mentions when we have Gramine v1.2 released.

So please keep the previous version of this code snippet:

python.manifest.sgx: python.manifest
	@test -s $(SGX_SIGNER_KEY) || \
		{ echo "SGX signer private key was not found, please specify SGX_SIGNER_KEY!"; exit 1; }
	gramine-sgx-sign \
		--key $(SGX_SIGNER_KEY) \
		--manifest $< --output $@

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tensorflow/BERT/python.manifest.template, line 21 at r1 (raw file):

  { path = "{{ python.distlib }}", uri = "file:{{ python.distlib }}" },
  { path = "{{ pythondistpath }}", uri = "file:{{ pythondistpath }}" },
]

We still need to use the old syntax in this PR. See our discussion in #20. We'll change to the new syntax when we have Gramine v1.2 released.

So please use the old syntax from #7. (But don't forget that you changed /tmp to the "tmpfs" type.)

Also, looks like you removed /etc directory -- which is good. Looks like it was redundant.

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tensorflow/ResNet50/Makefile, line 34 at r1 (raw file):

	gramine-sgx-sign \
		--manifest $< \
		--output $@

ditto (keep the old code with SGX_SIGNER_KEY)

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tensorflow/ResNet50/python.manifest.template, line 23 at r1 (raw file):

  { path = "{{ python.distlib }}", uri = "file:{{ python.distlib }}" },
  { path = "{{ pythondistpath }}", uri = "file:{{ pythondistpath }}" },
]

ditto

[Satya1493]

Reviewable status: 3 of 7 files reviewed, 4 unresolved discussions, not enough approvals from maintainers (2 more required), not enough approvals from different teams (2 more required, approved so far: ), "fixup! " found in commit messages' one-liners (waiting on @dimakuv)

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tensorflow/BERT/Makefile, line 45 at r1 (raw file):

Previously, dimakuv (Dmitrii Kuvaiskii) wrote…

We still need to use SGX_SIGNER_KEY in this PR. See our discussion in #20. We'll remove all those SGX_SIGNER_KEY mentions when we have Gramine v1.2 released.

So please keep the previous version of this code snippet:

python.manifest.sgx: python.manifest
	@test -s $(SGX_SIGNER_KEY) || \
		{ echo "SGX signer private key was not found, please specify SGX_SIGNER_KEY!"; exit 1; }
	gramine-sgx-sign \
		--key $(SGX_SIGNER_KEY) \
		--manifest $< --output $@

Done.

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tensorflow/BERT/python.manifest.template, line 21 at r1 (raw file):

Previously, dimakuv (Dmitrii Kuvaiskii) wrote…

We still need to use the old syntax in this PR. See our discussion in #20. We'll change to the new syntax when we have Gramine v1.2 released.

So please use the old syntax from #7. (But don't forget that you changed /tmp to the "tmpfs" type.)

Also, looks like you removed /etc directory -- which is good. Looks like it was redundant.

Done.

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tensorflow/ResNet50/Makefile, line 34 at r1 (raw file):

Previously, dimakuv (Dmitrii Kuvaiskii) wrote…

ditto (keep the old code with SGX_SIGNER_KEY)

Done.

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tensorflow/ResNet50/python.manifest.template, line 23 at r1 (raw file):

Previously, dimakuv (Dmitrii Kuvaiskii) wrote…

ditto

Done.

[dimakuv]

Reviewed 4 of 4 files at r2, all commit messages.
Reviewable status: all files reviewed, all discussions resolved, not enough approvals from maintainers (1 more required), not enough approvals from different teams (1 more required, approved so far: Intel), "fixup! " found in commit messages' one-liners

a discussion (no related file):
@aneessahib Could someone from your team (who didn't work on this TensorFlow PR) check that the PR works correctly (TF builds and runs with the latest release of Gramine -- v1.1)?

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[aneessahib]

Got it tested. The PR works fine.

[dimakuv]

Thanks @aneessahib . This PR is pending a review from @mkow (or someone else from ITL).

[dimakuv]

Reviewable status: all files reviewed, 1 unresolved discussion, not enough approvals from maintainers (2 more required), not enough approvals from different teams (2 more required, approved so far: ), "fixup! " found in commit messages' one-liners (waiting on @mkow and @Satya1493)

a discussion (no related file):
Add the explicit BSD-3 license, see #90

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