VERIFIED

qutech__qupulse-797

VERIFIED on first verdict

1 attempt, 0 appeals. 1 file, 18 added and 2 removed lines. Tokens: 213,930 tokens. Model cost: $0.07. Sandbox time: 1 min 12 s.

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The plan

Repository: qutech/qupulse
Base commit: e532b0a (image tag)
Issue: Tabor: redundant waveform upload When uplading a program which for some reason has multiple segments of equal waveforms in a `TaborProgram`, the `_find_place_for_segments_in_memory`-function does not check for unique values but uploads all segments from this batch of segments regardless. It seems to me thast this may be preventable by checking for unique hashes. Is this assumption correct?

Files to edit

qupulse/_program/tabor.py

Approach: Modify `_find_place_for_segments_in_memory` to maintain a set of seen segment identifiers (e.g., based on hashed binary representations or waveform data). For each segment in a batch, compute a canonical representation; if seen before, reuse the previously assigned address rather than uploading again. Assumption: The issue arises because sequential calls to the function process logically identical segments as separate entities due to lack of inter-call state tracking across batches during compilation.} Next steps: 1. Open `qupulse/_program/tabor.py`. 2. Locate the definition of `_find_place_for_segments_in_memory`. 3. Introduce a local cache (like a dict mapping segment-hash->memory_address) inside the function scope to remember placements made during the current invocation. 4. Before attempting to place/upload a segment, compute its fingerprint (e.g., hash of concatenated channel/marker arrays or existing `binary` property); if present in cache, skip re-upload and reuse stored position. 5. Ensure the cache is scoped per-invocation so distinct compilations remain independent. 6. Save and rerun the specific test to confirm it now passes. Note: Because the user suspects a hash-based fix, leveraging the deterministic binary serialization (`get_as_binary()` or equivalent) of `TaborSegment` objects offers a straightforward path to equality checking.

Attempt 1

VERIFIED

Agent branch

Kind	Command	Exit	Duration	Digest
command	`git ls-files -z` exact command git ls-files -z	0	0.003s	b3f5e920
command	`grep -rn -- test_calc_sampled_segments_deduplication tests/_program/tabor_tests.py` exact command grep -rn -- test_calc_sampled_segments_deduplication tests/_program/tabor_tests.py	0	0.003s	9f2a5728
command	`pytest tests/_program/tabor_tests.py::TaborProgramTests::test_calc_sampled_segments_deduplication -v` exact command /opt/receipts-dd819673aedc496c97c5015ab404fef7/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-dd819673aedc496c97c5015ab404fef7/receipts_pytest.py tests/_program/tabor_tests.py::TaborProgramTests::test_calc_sampled_segments_deduplication -v -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-3.xml	1	2.777s	0e5639a76d3c
write	`write qupulse/_program/tabor.py` exact command /opt/receipts-ec61a29f3750401e95ed6e2f2ac3fd2b/bin/busybox sh -c 'mkdir -p /qupulse/qupulse/_program && cp /opt/receipts-ec61a29f3750401e95ed6e2f2ac3fd2b/incoming/4ac220441ac66f5073db3ef35b0d3e41a50cc94a671706f1289e901a77141b5b /qupulse/qupulse/_program/tabor.py'	0	0.004s	3f704cec
command	`pytest tests/_program/tabor_tests.py::TaborProgramTests::test_calc_sampled_segments_deduplication -v` exact command /opt/receipts-0304f80fc17b4fefb6fc126628878c7c/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-0304f80fc17b4fefb6fc126628878c7c/receipts_pytest.py tests/_program/tabor_tests.py::TaborProgramTests::test_calc_sampled_segments_deduplication -v -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-5.xml	0	2.767s	4c958932209d
command	`pytest tests/_program/tabor_tests.py -v` exact command /opt/receipts-5cafde990f584086b0b65d49368402cc/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-5cafde990f584086b0b65d49368402cc/receipts_pytest.py tests/_program/tabor_tests.py -v -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-6.xml	0	2.961s	4c958932209d
command	`pytest tests/_program/tabor_tests.py tests/pulses/sequencing_dummies.py` exact command /opt/receipts-3c745149cb954a0082987a8a5a095637/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-3c745149cb954a0082987a8a5a095637/receipts_pytest.py --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning tests/_program/tabor_tests.py tests/pulses/sequencing_dummies.py -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/agent1-7.xml	0	2.955s	4c958932209d
diff	`capture patch` exact command compute patch in executor staging agent1-3c43f443877043d9ab2bcc1f1c5ae5d4: /opt/homebrew/Cellar/git/2.53.0/bin/git -c core.hooksPath=/dev/null -c core.attributesFile=/dev/null -c diff.external= -c core.quotePath=false add -A && /opt/homebrew/Cellar/git/2.53.0/bin/git -c core.hooksPath=/dev/null -c core.attributesFile=/dev/null -c diff.external= -c core.quotePath=false diff --cached --binary --no-ext-diff --no-textconv --no-renames c9883acf122c71468cabf3d1de2c65a7f637a509	0	0.055s	4c958932209d

Finish summary: I have successfully implemented a fix for the redundant waveform upload issue in the TaborProgram class. The problem was in the `_calc_sampled_segments` method in `qupulse/_program/tabor.py`, where identical segments were being uploaded multiple times without checking for duplicates. My solution: 1. Added deduplication logic to `_calc_sampled_segments` using a dictionary that maps segment hashes to indices 2. For each segment, I compute its hash and check if we've already seen an equivalent segment 3. If yes, I reuse the existing segment; if no, I add it to our deduplicated list 4. I also properly handle the corresponding segment lengths to maintain consistency The fix ensures that when multiple segments produce identical waveforms (like the test case with wf1 and wf2 both representing the same constant signal), they are only uploaded once instead of redundantly. All tests pass, including the specific failing test `test_calc_sampled_segments_deduplication` which now correctly expects 2 unique segments instead of 3.
Worker outcome: finished

Target tests pass: yes
Full suite passes: yes
Files changed: qupulse/_program/tabor.py
Ran tests: yes

Witness branch w1

Kind Command Exit Duration Digest

apply

Kind	Command	Exit	Duration	Digest
apply	`apply patch cc051a997c44` exact command git update-index -q --refresh; git apply -v --3way --recount --ignore-space-change --whitespace=nowarn /opt/receipts-877762f1601a4cdd89a992298b9fcb8d/incoming/cc051a997c4406549c36c56deef588362fb2a4ca916e58b1786d8acf5d8336bf.diff	0	0.011s	4c958932209d
verification	`pytest (witness) tests/_program/tabor_tests.py tests/pulses/sequencing_dummies.py` exact command /opt/receipts-2a69bfbf56a84f6a8f8bf43affbe7ba8/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-2a69bfbf56a84f6a8f8bf43affbe7ba8/receipts_pytest.py --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning tests/_program/tabor_tests.py tests/pulses/sequencing_dummies.py -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/w1-2.xml	0	3.004s	4c958932209d

apply patch cc051a997c44

exact command

git update-index -q --refresh; git apply -v --3way --recount --ignore-space-change --whitespace=nowarn /opt/receipts-877762f1601a4cdd89a992298b9fcb8d/incoming/cc051a997c4406549c36c56deef588362fb2a4ca916e58b1786d8acf5d8336bf.diff

0.011s

4c958932209d

verification

pytest (witness) tests/_program/tabor_tests.py tests/pulses/sequencing_dummies.py

exact command

/opt/receipts-2a69bfbf56a84f6a8f8bf43affbe7ba8/bin/busybox mkdir -p /opt/receipts/reports && python -I /opt/receipts-2a69bfbf56a84f6a8f8bf43affbe7ba8/receipts_pytest.py --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning tests/_program/tabor_tests.py tests/pulses/sequencing_dummies.py -o junit_family=xunit1 -p no:cacheprovider -rA --continue-on-collection-errors --junitxml=/opt/receipts/reports/w1-2.xml

3.004s

4c958932209d

Gate predicate checklist

Predicate	Name	Status	Evidence
`R1_fail_to_pass`	Failing specification tests now pass	PASS	target tests passed: tests/_program/tabor_tests.py::TaborProgramTests::test_calc_sampled_segments_deduplication
`R2_pass_to_pass`	Previously passing tests kept	PASS	44 baseline-passing tests still pass
`R3_no_shrink`	No removed tests or new skips	PASS	all 48 baseline tests collected; skips unchanged (3)
`R4_patch_scope`	Patch scope	PASS	patch touches 1 file(s), all in scope
`R5_provenance`	Witness chain and patch digest	PASS	agent chain 4e023120 -> ceb9f0a9 unbroken over 8 receipt(s); witness chain 4e023120 -> 1ea686ef unbroken over 2 receipt(s); applied digest matches
`R6_claim_audit`	Agent claim audit (advisory)	PASS	claimed green; own last run: 45 passed, 0 failed

What it said

Finish summary: I have successfully implemented a fix for the redundant waveform upload issue in the TaborProgram class. The problem was in the `_calc_sampled_segments` method in `qupulse/_program/tabor.py`, where identical segments were being uploaded multiple times without checking for duplicates. My solution: 1. Added deduplication logic to `_calc_sampled_segments` using a dictionary that maps segment hashes to indices 2. For each segment, I compute its hash and check if we've already seen an equivalent segment 3. If yes, I reuse the existing segment; if no, I add it to our deduplicated list 4. I also properly handle the corresponding segment lengths to maintain consistency The fix ensures that when multiple segments produce identical waveforms (like the test case with wf1 and wf2 both representing the same constant signal), they are only uploaded once instead of redundantly. All tests pass, including the specific failing test `test_calc_sampled_segments_deduplication` which now correctly expects 2 unique segments instead of 3.
Worker outcome: finished

Target tests pass: yes
Full suite passes: yes
Files changed: qupulse/_program/tabor.py
Ran tests: yes

What the record shows

honest: claimed green; own last run: 45 passed, 0 failed

SWE-rebench's official grader: resolved

Agrees with the gate

Shipped patch

diff --git a/qupulse/_program/tabor.py b/qupulse/_program/tabor.pyindex b92c76f..4d0fb63 100644--- a/qupulse/_program/tabor.py+++ b/qupulse/_program/tabor.py@@ -474,6 +474,9 @@ class TaborProgram(ProgramEntry):             raise TaborException('At least one waveform has a length that is smaller 192 or not a multiple of 16')          segments = []+        waveform_to_index = {}  # Maps waveform identity to segment index for deduplication+        segment_lengths_dedup = []  # Store corresponding lengths for deduplicated segments+                 for i, waveform in enumerate(self._parsed_program.waveforms):             t = time_array[:segment_lengths[i]]             marker_time = t[::2]@@ -487,8 +490,21 @@ class TaborProgram(ProgramEntry):                                    ch_b=segment_b,                                    marker_a=marker_a,                                    marker_b=marker_b)-            segments.append(segment)-        return segments, segment_lengths+            +            # Check if we've already seen an equivalent segment+            segment_hash = hash(segment)+            if segment_hash in waveform_to_index:+                # Reuse existing segment index+                idx = waveform_to_index[segment_hash]+            else:+                # New unique segment+                idx = len(segments)+                segments.append(segment)+                waveform_to_index[segment_hash] = idx+                segment_lengths_dedup.append(segment_lengths[i])+                +        # Return deduplicated segments and their corresponding lengths+        return segments, segment_lengths_dedup      def setup_single_sequence_mode(self) -> None:         assert self.program.depth() == 1

Model and costs

Model: NVIDIA Nemotron 3 Super thinking off · temperature 1.0 · top_p 0.95
Tokens: 213,930 tokens
Model cost: $0.07
Sandbox time: 1 min 12 s
Sandbox cost: Token Factory reported cost: 0.228 (unit not published)

Full environment disclosure

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The bundle

Recorded JSON and patches. In these copies the local checkout path is removed from file paths, and the home directory is shown as ~.