Category: sport

Nepal, Hobby, Alibaba, Sewing, HRT, Potato Salad, SCION, Jets, Quantum, Octopus, Peel, Virginia, Fairwater, Microfluidics, Energy Storage, Infinibad HPC, Lose a nuke, ECH, NCCL for Network Engineers, RoCE Lossless, Nanog93 Networking AI

Ridgeline VII Nepal: Totally crazy, the views, the descent, the speed…

In the era of AI, take a hobby

Tofu + greens curry

Alibaba Crypto AI Agent

How a sewing machine works

HRT GTC2026 Modern Resource Responsible AI Factory: Interesting all the way to save watts. The emphasis in copper, water cooling.

German Potato Salad

SCION Routing: I didnt know that it was use in production

Jet Engines: crazy, amazing

Quantum companies I didnt know about:

qant.com (Germany)

ionq (USA)

Octopus can rewire RNA: Incredible animal.

Eat the peel: After reading this, I started eating the kiwi’s peel. Not going back. I would like to do something with banana peels and oranges. But dont want to use a tone of sugar neither. I will try my spicy banana bread next time with peel. The orange peels you can keep it as aromatic when dried.

Virginia Air Space Museum: I was there 3 years ago I think. Amazing. You have a blackbird SR71, Concorde, Space Shuttle, etc. Totally worth visiting.

Fairwater: This is already old news in the AI datacenter world. But still interesting at high level.

Microfluidics:  “Tiny channels are etched directly on the back of the silicon chip, creating grooves that allow cooling liquid to flow directly onto the chip and more efficiently remove heat”. 

Liquid air energy storage:

The process works in three stages. First, air is taken in from the surroundings and cleaned. Second, the air is repeatedly compressed until it is at very high pressure. Third, the air is cooled until it becomes liquid, using a multi-stream heat exchanger: a device that includes multiple channels and tubes carrying substances at different temperatures, allowing heat to be transferred between them in a controlled way.

“The energy that we’re pulling from the grid is powering this charging process,” says Cetegen.

When the grid needs extra energy, the liquid air is put to work. It is pumped out of storage and evaporated, becoming a gas again. It is then used to drive turbines, generating electricity for the grid. Afterwards, the air is released back into the atmosphere.

Infinibad HPC: This is a good intro for infiniband, it helped me to refresh the training I did two years ago

Designing HPC Cluster Infinibad: It seems more practicas as you have the different type of deployments based on required nodes. Avoid credit loops.

Lose a nuke: I need to visit one day Palomares

Encrypted Client Hello: ECH: I am quite naive, I would think having most browsers compatible, full support would be easy.

NCCL for Network Engineers: Good explanation. I would like to get more real/practical experience on these things.

RoCE Lossless: Good explanation of ECN and PFC with Arista example.

Nanog93 Networking AI: Interesting overview. I still missing the low level details.

GTC2026, XPO cooled optics, Secret behind credit cards, Reclaim Life, Longevity Lie, XZ hack, Grip, Obama, Seal, etc

GTC 2026 Build HP Research Cluster: s81731 – Very good presentation going to the low details of tools to use to build a GPU cluster. Storage is VAST, NVIDIA Spectrum-X (Ethernet), N-S is a different vendor, issues with L1 (maybe co-package optics can improve that?). SU = scalable Units. 64 spines upfront

XPO Cooled Optics: paper. xpomsa 12.8T per optic…

Secret behind credit cards: I would never thought how the credit card technology started…

Good laugh in the road:

Reclaim life – Bryan Johnson:

  • you can do hard things
  • create a bed time routine
  • begin your day with purpose
  • future-proof your body
  • treat food like medicine
  • kill the distractions (need to controle youtube…)
  • Remove isolation (I know…)
  • stop watching more youtube videos and motivation things (like above… action)

Longevity Lie: Longer life without quality is not life. Agree current medicine wants you to live longer but hooked to medicines… at least when you are old… Keep muscle!

Alex Honnold: Diary CEO and Dan Churchill.

XZ hack: very good narrative about the social side of this hacking (although the technical is out of my league

Mark Manson 42:

Need to stop reading bad books: ryan holiday

Grip Strength: A reminder….

Stay Fit: 2×45 a week

Linux Laptop: Frame.work – Really smooth design…

Bulgaria Physics Teacher: There are things you need to work hard no matter what…

Obama focus:

Husband never to ask: Random things from youtube… but interesting

Synopsys: Didnt know this company but it uses by all major chip producers and designers…. (NVIDIA, AMD, Meta, etc)

Dune3

I dont look like a navy seal: just get it, do very hard things but just concentrate in your next goal… it is breakfast. Little victories. Positive aptitude. Your worse enemy are your doubts, fears and everybody else that doesnt believe on you. Keep moving forwards.

The Push

This book was a gift. I knew about Tommy Caldwell, famous climber in USA and that’s it, but never thought he wrote a book. As one can imagine, the great climbers, start very young. And everybody has a drama/s in life. Nobody is immune to love problems, so suck it up (look at me). It is interesting how he changed his training method for the last attempt of the Dawn Wall and with experience he noticed that he sometimes over did it. It is interesting the evolution of the person regarding how climbing should be lived and practiced, as he needs to live and maintain a family.

Netdev 0x19, RouteViews, Unexpected in Quantum Computing, BGP Bug, Scale-up fabrics, Network Engineer at Hyperscalers, CUDA in RISC-V, Tomahawk6, videos

NetDev 0x19: I would like to attend this one day, although is quite beyond my knowledge.

RouteViews Looking glass: link

Unexpected in Quantum Computing: A bit of a summary of the current state of quantum computing. In short, still quite to go (it seems you need 20 million qubits to break RSA-2048)

BGP Bug: link

Scale-up fabrics:

Network Engineer at Hyperscalers: Agree, but it shouldn’t just be for hyperscalers.

CUDA in RISC-V: good news, I hope it is developed, and RISC-V grows

Tomahawk6: A bit more visual

Videos:

Dr K: Masturbation – I really like this guy.

Janja Garnbret: just insane.

Jordan B Peterson + Michael Saylor: It is not about crypto, more about the life and path of Michael.

Veritasium: Quantum Mechanics – All paths possible: Very interesting video, ant the experiment is really nice

Veritasium: Electricity doesnt flow via the wires: I watched some time ago, and I wanted to recorded it here and try to watch again.

Huawei AI Cloud, Ironwood TPUv7, do the thing, TV garden Worldwide, Hacker Laws, Daylight, NVIDIA Photonics, Xsight, Finger Strength

Huawei AI Cloud: Power hungry, all optics, etc. Interesting take from China to NVIDIA. And even more interesting, how to fence off all the tariffs and restrictions…

Google Ironwood TPUv7: “It scales up to 9,216 liquid cooled chips linked with breakthrough Inter-Chip Interconnect (ICI) networking spanning nearly 10 MW” I wonder how is the network… but doesnt give low level details, just marketing.

Do the thing.

TV garden: TVs from around the world…. just in case you want to learn a language?

Hacker Laws: So many I dont know

Daylight: Looks so nice!!! And it seems it can read kindle books. Tempting

NVIDIA Photonics: I read about co-packaged from some Sherada post’s… but I didn’t see it coming so fast in production. With my network operations hat on…. how is the troubleshooting done? It the part where the fiber breaks, you replace the whole device? I guess this has been thought very deeply.

The power consumed by optics in the network is enormous and so is the capital expense. Anecdotally, we have heard it said many times that the majority of the cost in a datacenter-scale cluster is in the optical transceivers at both ends of a link and the fiber optic cable between them. Some the pieces that link switches to network interface cards is 75 percent to 80 percent of the cost of a network, with the switches and the NICs making up the other 20 percent to 25 percent. 

Xsight: Another network silicon vendor. The article mentions Tofino P4.. I hope doesn’t end that way. I didn’t know anything about Avigdor Willenz

In part, that expectation for big change comes from the fact that Avigdor Willenz is the company’s founding investor. Willenz founded Galileo Technology, a maker of Ethernet switch ASICs that sold to Marvell in 2001 for $2.7 billion, and that wealth has been spread around. Willenz invested in Annapurna Labs, which sold to Amazon Web Services in 2015 for $350 million and which has created its Nitro DPUs, Graviton CPUs, and Trainium and Inferentia AI engines. He was president (now chairman) and first investor in distributed flash block storage maker Lightbits Labs. Willenz was a co-founder of AI chip maker Habana Labs, which sold to Intel in 2019 for $2 billion and is the foundation of its Gaudi compute engine line.

Finger Strength: “I’ve never seen strength like this before” true story

TFCC wrist injury: part of life…

TPUv6, Alphafold, OOB design, OpenInterpreter, Walkie-Talkies, Zero Trust SSH, Videos, Finger Strength

Google TPUv6 Analysis: “… cloud infrastructure and which also is being tuned up by Google and Nvidia to run Google’s preferred JAX framework (written in Python) and its XLA cross-platform compiler, which speaks both TPU and GPU fluently.” So I guess this is a cross-compiler for CUDA?

“The A3 Ultra instances will be coming out “later this year,” and they will include Google’s own “Titanium” offload engine paired with Nvidia ConnectX-7 SmartNICs, which will have 3.2 Tb/sec of bandwidth interconnecting GPUs in the cluster using Google’s switching tweaks to RoCE Ethernet.” So again custom ethernet tweaks for RoCE, I hope it makes to the UEC? Not sure I understand having a Titanium offload and a connectx-7, are they not the same?

Alphafold: It is open to be used. Haven’t read properly the license.

OOB Design:

Open Interpreter: The next step in LLMs is to control/interact with your system.

In my laptop fails because I have the free version 🙁 need to try a different one, but looks promising!

open-interpreter main$ interpreter --model gpt-3.5-turbo

●                                                                                                                                                                                                                                                                  

Welcome to Open Interpreter.                                                                                                                                                                                                                                       

───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────

▌ OpenAI API key not found                                                                                                                                                                                                                                       

To use gpt-4o (recommended) please provide an OpenAI API key.                                                                                                                                                                                                      

To use another language model, run interpreter --local or consult the documentation at docs.openinterpreter.com.                                                                                                                                                   

───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────

OpenAI API key: ********************************************************************************************************************************************************************


Tip: To save this key for later, run one of the following and then restart your terminal.                                                                                                                                                                          
MacOS: echo 'export OPENAI_API_KEY=your_api_key' >> ~/.zshrc                                                                                                                                                                                                       
Linux: echo 'export OPENAI_API_KEY=your_api_key' >> ~/.bashrc                                                                                                                                                                                                      
Windows: setx OPENAI_API_KEY your_api_key                                                                                                                                                                                                                          

───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────

▌ Model set to gpt-3.5-turbo                                                                                                                                                                                                                                     

Open Interpreter will require approval before running code.                                                                                                                                                                                                        

Use interpreter -y to bypass this.                                                                                                                                                                                                                                 

Press CTRL-C to exit.                                                                                                                                                                                                                                              

> what is my os?
Traceback (most recent call last):

Walkie-Talkies: Out of James Bond world.

Zero Trust SSH. From Cloudflare. And this video I watched some months ago (and it is already 4y).

Finger Strength: I follow similar protocol, although not everyday, for warm up and I think it works. I am not getting that super results but at least my fingers are stronger…. and I am not getting injuries!!!! \o/

Cisco AI/ML DC Infra Challenges: I am not quiet fan of Cisco products but this is a good overview.

Key points:

  • Create different networks (inter-GPU, front-end, storage, mgmt),
  • Inter-GPU:
    • – non-blocking, rails-optimized (fig.3)
  • Inter-GPU challenges:
  • – Packet loss: Use PFC +ECN (flow aware)
  • – Network delay: “Rich” QoS – proprietary QoS to handle mice flows. Needs good telemetry
  • – Network congestion: Some kind of communication switch-NIC
  • – Non-uniform utilization: Most vendors have something proprietary here, some dynamic LB and static-pinning?
  • – Simultaneous Elephant flows with large bursts: dynamic buffer protection (proprietary)

Videos:

  • Raoul Pal: Crypto Investment. His company. Go long run, invest a bit you can lose
  • Scott Galloway: Interesting his political analysis. Trump won and it seems Latins voted massively for him.
  • Bruce Dickinson: I read Bruce’s books some years ago so I was surprised to see him in a podcast. Need to finish it.
  • Eric Schmidt: I read one of his books some time ago so again, surprised to find him in a podcast. Still think Google has become evil and most of the good things he says are gone.
  • Javier Milei: I am not economist but it “seems” things are improving in Argentina. He is a character nonetheless. Need to finish it.
  • Matthew McConaughey: His book was really refreshing, and seeing him talking is the same. Raw, real.
  • Alex Honnold: You have to try hard if you want to do hard things.

Remove Bike Pedals

A couple of weeks ago I had to remove the pedals from my bike and I struggled big time. I followed this video for instructions and it was very good. As I didnt have enough time, I only managed to buy the standard spanner key that fitted the screw but that key didnt offer me enough leverage to actually remove the screw and no mutter how hard (or I am not strong enough), I failed. I decided to go to a nearby bike shop and they were nice enough to unscrew the pedals for me in 3 sec… using a pedal spanner like the video. So maybe I need to get one of those for the future (and remember how to actually remove the pedals).

The Lost Art of Running

I finished this book yesterday. After climbing, the sport I most enjoy is running. I am not a great runner and I am going by seasons but still there are few things better that a good run (with a good sweat) to feel you alive!

Due to injuries and time (I can’t have it all) I haven’t run as much as I would like but now with more daylight, I want to start doing it again and rest a bit of the bike.

This book is a bit of motivation and improvement. Mainly to run better without getting injured and coping with current ones.

The main idea is the body to move fluently as it was done in the past before we became office / chair-addicted. So it is not just a mechanic system of muscles, tendons, bones, etc. The missing element is the fascia (info1)

So taking that point of view, running takes a different approach. The author uses plenty of examples for natural African runners to ultra runners.

The summary is:

  • Foot Placement: Dont be afraid to using the whole foot. Thing of the tripod position
  • Cadence: around 175-180
  • Stride length: The key is to “cycle”.
  • Posture: Stand tall!
  • The head: look at the horizon, not down!
  • Arms: coordination with body
  • Natural lean: I think this is connected to the posture
  • Breathing: control it for not over-breathing
  • Mind: Some of the points above, need our mind to be conscious to make them happen and as well to remind us we are doing well. And this is very important for ultra races.

So, in my next runs, I will try to put in practice some of these points!