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Vikram Sekar

@vikramskr

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I write a newsletter with easy but detailed explainers on semiconductor technology for busy engineers and investors | Views mine | Sr. Staff Engineer at $QCOM

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Joined November 2020
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@vikramskr
Vikram Sekar
2 months
Generative AI meets RF circuit design = game changer. • Passive networks tailored by diffusion models. • Specify stop-band/pass-band; AI does the rest. • Pixel patterns are not intuitive to electrical response. Designs getting more abstract. Prepare for a cognitive shift.
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@vikramskr
Vikram Sekar
1 hour
I quite like this table. Probably misses a lot of nuance tho.
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@vikramskr
Vikram Sekar
22 hours
Process node is 180nm. Just like me. Old.
@vikramskr
Vikram Sekar
22 hours
Guess India named their first indigenous chip after me. Lol.
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@vikramskr
Vikram Sekar
22 hours
Guess India named their first indigenous chip after me. Lol.
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@vikramskr
Vikram Sekar
1 day
After wathcing @highyieldYT's latest YT video, I'm beginning to think I should look into the technical side of energy as much as I look at chips and semi on my substack.
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@vikramskr
Vikram Sekar
1 day
Who has heard of this law?
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@vikramskr
Vikram Sekar
2 days
Tweet card summary image
mail.bigdeskenergy.com
RIP
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@vikramskr
Vikram Sekar
2 days
All this slander about Substack and how the in-app purchases are raising cost to subscribers by 30%. Don’t wanna pay the apple tax? Just go on your laptop and upgrade. Simple. Smh.
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@vikramskr
Vikram Sekar
2 days
The memory wall is the real bottleneck in AI hardware. GPUs today can deliver massive TFLOPS, but they sit idle waiting for data. What bridges the gap is High Bandwidth Memory (HBM) — the only memory tech that can keep up with modern AI training. HBM is so critical that it.
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@vikramskr
Vikram Sekar
7 days
Very long post drops this Sunday ⚓
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@vikramskr
Vikram Sekar
8 days
I got too nerdy on HBM. From DRAM memory cells to hybrid bonding. Gory detail you didn't know you wanted to know. Publishing on Sunday on my newsletter. 👇🏽.
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@vikramskr
Vikram Sekar
9 days
d-Matrix announced their 3D In Memory Compute chip. → Logic die sits on top of DRAM (likely custom).→ The interconnect is so short between memory and compute that bandwidth is supposedly 10x that of HBM4. → Energy efficiency is also supposedly better (<1 pJ/bit?). There is no
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@vikramskr
Vikram Sekar
10 days
AI context windows need to get large enough just so that people can prompt self help books into 2,000 word essays.
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@vikramskr
Vikram Sekar
11 days
latest model but data from a year ago? what use is this?
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@vikramskr
Vikram Sekar
11 days
guys what am I doing wrong
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@vikramskr
Vikram Sekar
13 days
RT @dylan522p: Feel like I'm taking crazy pills. We are just back at step one. Don’t store KV cache, just recompute it.
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