Technical writing on quantum computing, IBM Z modernization, open hardware and embedded systems. Every post cites its sources.
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Ephesus scored mutants by vitest's exit code until runs that executed zero tests counted as kills. How its checked-in round reads the report instead.
Qiskit's client-side Estimator requires explicit PEC and PEA noise models. Check their freshness, record learning times and account for calibration drift.
An archive of IBM calibration data missed 27 of 227 documents in a week. Why the figure had to be pinned before the backfill, and its cost in device states.
CICS TS 6.3 writes an OpenTelemetry span only when the caller's sampled flag is set, and cannot change it. Find out who owns your SMF 1159 volume.
On Linux and macOS, git commit hands its housekeeping to a detached process. How Ephesus caught it in a CI teardown, the two-flag fix, and what it costs.
IonQ's single-CPU decoder headline uses the one workload run at a 5 ms cycle. Here is the backlog mechanism and the figure worth quoting instead.
FlyBatch's CRC-32 fingerprints all matched on MVS while GCCMVS turned its kernel's zero constant into a subnormal. Why the check was blind, and what caught it.
New Zowe 3.4 installs run API ML as one address space, ZWE1AG: which AT-TLS rules that widens, which it breaks, and the suffix one Zowe page gets wrong.
Eligibility derived from IBM calibration gate lengths stopped noise landing on zero-duration rz gates and left an uncompiled circuit with an empty noise model.
Dynamical decoupling reversed an apparent subthreshold trend for a surface code on IBM heavy-hex hardware. Here is the mechanism and the numbers.
A 1981 operating system gives a symbol eight characters. Here is the include name three files had to share, and the 38 externals that became three names.
An IBM preprint composes post-selection with probabilistic error cancellation using a spacetime noise model, cutting inferred sampling overhead up to 63-fold.
A look inside the Open Memory Initiative's approach to building an open-source DDR4 UDIMM reference design, from architecture decisions to signal integrity.