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Support empty tensor list #2053

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Summary:
When we configure empty sparse feature list, the embedding lookup results could be an empty list.

This is for unblocking the experiment in D57450566 (leaving only dense features in APS models)

Reviewed By: joshuadeng

Differential Revision: D57500720

@facebook-github-bot facebook-github-bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label May 28, 2024
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This pull request was exported from Phabricator. Differential Revision: D57500720

xush6528 pushed a commit to xush6528/torchrec that referenced this pull request May 28, 2024
Summary:

When we configure empty sparse feature list, the embedding lookup results could be an empty list.

This is for unblocking the experiment in D57450566 (leaving only dense features in APS models)

Reviewed By: joshuadeng

Differential Revision: D57500720
@xush6528 xush6528 force-pushed the export-D57500720 branch from f0a6a26 to d111477 Compare May 28, 2024 23:38
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This pull request was exported from Phabricator. Differential Revision: D57500720

xush6528 pushed a commit to xush6528/torchrec that referenced this pull request May 28, 2024
Summary:

When we configure empty sparse feature list, the embedding lookup results could be an empty list.

This is for unblocking the experiment in D57450566 (leaving only dense features in APS models)

Differential Revision: D57500720
@xush6528 xush6528 force-pushed the export-D57500720 branch from d111477 to 68dcba1 Compare May 28, 2024 23:55
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This pull request was exported from Phabricator. Differential Revision: D57500720

Summary:

When we configure empty sparse feature list, the embedding lookup results could be an empty list.

This is for unblocking the experiment in D57450566 (leaving only dense features in APS models)

Reviewed By: dstaay-fb

Differential Revision: D57500720
@xush6528 xush6528 force-pushed the export-D57500720 branch from 68dcba1 to b66dcb8 Compare May 29, 2024 00:04
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This pull request was exported from Phabricator. Differential Revision: D57500720

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