How a memory read moves through the RTX 4090
An article dated August 13, 2026 traces an LDG.E SASS instruction through the RTX 4090’s hardware units and memory hierarchy, including details explored through reverse engineering.
Source: Rastreando uma instrução LDG na RTX 4090 (blog.doubleword.ai). Text prepared with AI from this source.
What happened and what to do
The article, dated August 13, 2026, traces an LDG.E SASS instruction through the hardware units and memory hierarchy of an RTX 4090. Its analysis includes reverse engineering undocumented details and describes, at hardware level, how memory reads move through the card.
A company running GPU workloads could use this kind of investigation to understand memory-access bottlenecks and guide performance tests. Practical work could collect execution metrics, compare workloads and configurations in a controlled environment, and present findings in a dashboard, without assuming improvements before measurement.
How the consultancy can help
Wendelmaques can diagnose a GPU workload and its memory bottlenecks, define an instrumentation scope, and implement collection, analysis, and dashboards for tracking tests and operations.
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Send a short description of your GPU workload or performance issue. Wendelmaques will assess the case and prepare a scoped proposal for diagnosis and implementation.
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