From 55cc6fcc3a2615c3e78440c75162c5e248dc1515 Mon Sep 17 00:00:00 2001 From: andrehche <60794067+andrehche@users.noreply.github.com> Date: Mon, 3 Nov 2025 14:47:40 -0500 Subject: [PATCH 1/4] Update calibration-jobs.mdx --- docs/guides/calibration-jobs.mdx | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/docs/guides/calibration-jobs.mdx b/docs/guides/calibration-jobs.mdx index 880982e3506..e3386a8dcb0 100644 --- a/docs/guides/calibration-jobs.mdx +++ b/docs/guides/calibration-jobs.mdx @@ -9,9 +9,9 @@ description: Describes what calibration jobs are and how often they run Multiple aspects of the QPU are affected by the many different calibrations that IBM® runs daily and hourly. -### Daily calibrations +### Device calibrations -These calibrations run once every day and last 30-90 minutes, depending on the size of the QPU. The devices start this daily calibration at midnight ET, with the calibration jobs interleaving one-for-one with jobs from external users. This causes the calibration jobs to spread out across several hours, sometimes more than half a day. They include the following: +Calibration for qubit and gate parameters are conducted on an as-needed basis when parameters are determined to require calibration based on regularly scheduled diagnostic monitoring experiments that are interleaved with user jobs. These calibrations can occur at any time during the day based on device performance. Experiments which measure benchmarks which are reported to Qiskit are run daily and interleave with user jobs. * **Single-qubit calibrations** @@ -19,11 +19,11 @@ The frequency, pulse amplitudes, and “DRAG” parameter of each qubit are cali * **Single-qubit benchmarking** - The T1/T2 coherence times and measurement error rates are measured, and randomized benchmarking is run in batches of non-adjacent qubits. + The T1/T2 coherence times and measurement error rates are measured, and randomized benchmarking is run in batches of non-adjacent qubits. These are run automatically on an as-needed basis. * **Two-qubit gate calibrations and benchmarking** - The amplitude and phase of each pulse is calibrated, and randomized benchmarking in batches of well-separated gates of similar length is run. + The amplitude and phase of each pulse is calibrated, and randomized benchmarking in batches of well-separated gates of similar length is run. These are run automatically on an as-needed basis. ### Hourly calibrations/monitoring From 3a2d57d9b03ad52dded2098abf819536833d02c6 Mon Sep 17 00:00:00 2001 From: andrehche <60794067+andrehche@users.noreply.github.com> Date: Tue, 4 Nov 2025 13:36:33 -0500 Subject: [PATCH 2/4] Update docs/guides/calibration-jobs.mdx Co-authored-by: abbycross --- docs/guides/calibration-jobs.mdx | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/docs/guides/calibration-jobs.mdx b/docs/guides/calibration-jobs.mdx index e3386a8dcb0..ea742529cc8 100644 --- a/docs/guides/calibration-jobs.mdx +++ b/docs/guides/calibration-jobs.mdx @@ -11,7 +11,7 @@ Multiple aspects of the QPU are affected by the many different calibrations that ### Device calibrations -Calibration for qubit and gate parameters are conducted on an as-needed basis when parameters are determined to require calibration based on regularly scheduled diagnostic monitoring experiments that are interleaved with user jobs. These calibrations can occur at any time during the day based on device performance. Experiments which measure benchmarks which are reported to Qiskit are run daily and interleave with user jobs. +Calibrations for qubit and gate parameters are conducted on an as-needed basis. Regularly scheduled diagnostic monitoring experiments, interleaved with user jobs, determine when calibrations are needed. These calibrations can occur at any time during the day, based on device performance. Benchmark-measuring experiments that are reported to Qiskit are run daily and interleave with user jobs. * **Single-qubit calibrations** From 125e949a9a0b27112c9059fcbbde4b90c45c64db Mon Sep 17 00:00:00 2001 From: andrehche <60794067+andrehche@users.noreply.github.com> Date: Fri, 7 Nov 2025 09:33:56 -0500 Subject: [PATCH 3/4] more updates to how long jobs are run for and benchmark updating --- docs/guides/calibration-jobs.mdx | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/docs/guides/calibration-jobs.mdx b/docs/guides/calibration-jobs.mdx index ea742529cc8..db08bd51553 100644 --- a/docs/guides/calibration-jobs.mdx +++ b/docs/guides/calibration-jobs.mdx @@ -15,15 +15,15 @@ Calibrations for qubit and gate parameters are conducted on an as-needed basis. * **Single-qubit calibrations** -The frequency, pulse amplitudes, and “DRAG” parameter of each qubit are calibrated. + The frequency, pulse amplitudes, and “DRAG” parameter of each qubit are calibrated on an as-needed basis. * **Single-qubit benchmarking** - The T1/T2 coherence times and measurement error rates are measured, and randomized benchmarking is run in batches of non-adjacent qubits. These are run automatically on an as-needed basis. + The T1/T2 coherence times and measurement error rates are measured, and randomized benchmarking is run in batches of non-adjacent qubits. These benchmarks are measured on a daily basis, other than measurement error, which is reported when readout angle calibrations are performed as well. * **Two-qubit gate calibrations and benchmarking** - The amplitude and phase of each pulse is calibrated, and randomized benchmarking in batches of well-separated gates of similar length is run. These are run automatically on an as-needed basis. + The amplitude and phase of each pulse is calibrated, and randomized benchmarking in batches of well-separated gates of similar length is run. These benchmarks are measured on a daily basis. ### Hourly calibrations/monitoring @@ -48,7 +48,8 @@ No; since the circuits are bundled into a single job, the entire job will run wi ## How long do calibration jobs run for? -We run both daily and hourly calibration jobs. Daily calibrations on a smaller device (5-7 qubits) may take about 30 minutes, while for larger devices (7+ qubits) they could take about 90 minutes. The hourly calibrations run for about 2-3 minutes each hour. +As calibrations are now performed on an as-needed basis, the timing of each calibration depends on device performance and scheduling relative to active job flow. For Heron devices, the total calibration time accumulated over the course of a day is not expected to exceed two hours. + ## Simultaneously-submitted jobs with different calibrations From fa493d63fd5b75782cd425eee1817a67c04de8b2 Mon Sep 17 00:00:00 2001 From: abbycross Date: Fri, 7 Nov 2025 09:58:55 -0500 Subject: [PATCH 4/4] Apply suggestions from code review --- docs/guides/calibration-jobs.mdx | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/docs/guides/calibration-jobs.mdx b/docs/guides/calibration-jobs.mdx index db08bd51553..cbb9d180e71 100644 --- a/docs/guides/calibration-jobs.mdx +++ b/docs/guides/calibration-jobs.mdx @@ -19,7 +19,7 @@ Calibrations for qubit and gate parameters are conducted on an as-needed basis. * **Single-qubit benchmarking** - The T1/T2 coherence times and measurement error rates are measured, and randomized benchmarking is run in batches of non-adjacent qubits. These benchmarks are measured on a daily basis, other than measurement error, which is reported when readout angle calibrations are performed as well. + The T1/T2 coherence times and measurement error rates are measured, and randomized benchmarking is run in batches of non-adjacent qubits. These benchmarks are measured on a daily basis, with the exception of measurement error, which is reported when readout angle calibrations are performed as well. * **Two-qubit gate calibrations and benchmarking** @@ -48,7 +48,7 @@ No; since the circuits are bundled into a single job, the entire job will run wi ## How long do calibration jobs run for? -As calibrations are now performed on an as-needed basis, the timing of each calibration depends on device performance and scheduling relative to active job flow. For Heron devices, the total calibration time accumulated over the course of a day is not expected to exceed two hours. +As calibrations are performed on an as-needed basis, the timing of each calibration depends on device performance and scheduling relative to active job flow. For Heron devices, the total calibration time accumulated over the course of a day is not expected to exceed two hours. ## Simultaneously-submitted jobs with different calibrations