◆ MATLAB

Improve MATLAB performance

This is real work, not a feature someone invented — it comes from real job ads and real questions people asked. Below are four ready AI prompts: get it done, make it easy for the next person to say yes to, work out the right move when you are stuck, and stop it coming back.

4prompts

The same task, four prompts

today's deadline · the next reviewer · the stuck moment · the pattern
AExecute — do the immediate taskOptimize the 'image_segmentation_algorithm.m' script to run faster. The current execution time…+
Optimize the 'image_segmentation_algorithm.m' script to run faster. The current execution time is too long for real-time processing, and I need it to process each frame in under 0.1 seconds for the live demo on Wednesday.
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
BImprove — make it easier to acceptBefore I run the large-scale Monte Carlo simulation, analyze the 'financial_model_simulation.m'…+
Before I run the large-scale Monte Carlo simulation, analyze the 'financial_model_simulation.m' script for performance bottlenecks. I need to reduce its execution time by at least 30% to meet the deadline for the quarterly report. Focus on identifying inefficient loops, memory-intensive operations, and opportunities for parallelization.
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
CDecide — diagnose the stuck momentMy 'neural_network_training.m' script is taking days to complete, and I'm running out of time…+
My simulation is taking too long, and I'm not sure where the bottleneck is.
My 'neural_network_training.m' script is taking days to complete, and I'm running out of time before the conference submission deadline next week. I've tried minor tweaks, but it's still too slow. I don't know if the issue is in the data loading, the training loop, or the model architecture itself. What's the best way to profile this script to pinpoint the exact performance bottleneck and suggest targeted optimizations without rewriting the whole thing?
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
DBecome — change the patternAlmost every time I scale up my analysis to larger datasets, my scripts slow to a crawl, and I…+
I constantly face performance issues with my scripts on large datasets.
Almost every time I scale up my analysis to larger datasets, my scripts slow to a crawl, and I end up spending days debugging performance. I often resort to quick fixes that don't truly solve the underlying problem. What habit should I change in my coding workflow to proactively design for performance and scalability, especially when working with big data or complex computations?
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?

Questions people actually ask

honest answers, no sign-up

Every task here was seen in the real world. Someone doing the job named it, a real job ad asked for it, or a lot of people asked about it online.

If nothing real showed a task, it is not on the page. That is the whole rule.

They are the same job approached four ways, because what you need depends on where you are.

Get it done today. Make it easy for the next person to say yes to. Work out the right move when you are stuck. Learn the pattern so the job stops coming back.

For most of these jobs it can carry the heavy thinking - draft it, sort it, check it, rehearse it with you.

It cannot sit in your chair, take the blame when a number is wrong, or notice what nobody wrote down. Let it do the first 80%. Keep the last 20% that is truly yours.

No. Copy any prompt and paste it into the AI you already use. No account, no score, no wall in the way.

Any of them. The prompts describe the work rather than naming a product, so they are not tied to one assistant.

That is also why they keep working when you switch.

Change it freely. Every prompt is a starting line, not a rule.

Put in your real numbers, your real names and your real deadline. The more you make it yours, the better the answer comes back.

The tasks come from real job ads, published job data and the questions people ask in public forums.

The steps come from MATLAB's own documentation, with practitioner sources for the traps the manual does not mention.

Push once. Ask it to sharpen the weakest part and to say what it assumed.

Most wrong answers come from a missing detail rather than a bad prompt - tell it the thing it could not know.