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Ken Shirriff

The weaving of a Pentium is so accurate that I could label the functional blocks of the processor. Amusingly, the gallery hung the weaving backward. The wrong side is facing outward, so the chip is mirrored. I had to flip the image to make this diagram. 2/6

A Navajo rug representing the Pentium processor. I have labeled the various functional blocks such as integer execution units, floating point unit, instruction fetch, code cache, and data cache.
25 comments
Ken Shirriff

The weaving is not just a Pentium but specifically the P54C revision of the original Pentium. The first Pentium chips were too hot and slow. Intel fixed this by a) moving from 800 nm to 600 nm, b) dropping the voltage from 5V to 3.3V, and c) adding a clock driver that could stop the clock to idle parts of the chip. Intel also added 200,000 transistors to support multiprocessing; circuitry that is visible in the rug. My photo shows the P5 on the left and the smaller P54C on the right. 3/6

Two Pentium chips in purple ceramic packages. The lids are removed to show the dies inside. The dies are surrounded by gold-plated pins. The chip on the left is larger than the chip on the right.
Ken Shirriff

Marilou Schultz, the artist, learned weaving as a child and is part of four generations of weavers. She used wool from the Navajo-Churro sheep along with traditional plant dyes. She worked from an Intel photo of the die (shown below) and used the "raised outline" weaving technique to make the borders of chip regions more visible. The lack of symmetry made the project challenging. 4/6

The Pentium rug next to an Intel photo of the Pentium die. I flipped the rug image to match the die. The die photo has very bright reds, greens, and other colors. The rug has the identical pattern but with muted traditional colors.
Ken Shirriff

Marilou Schultz also created a weaving "Untitled (Unknown Chip)", 2008. Antoine Bercovici identified it for me as the AMD K6 III processor. These weavings are part of an exhibition "Woven Histories: Textiles and Modern Abstraction". The exhibition is no longer at the National Gallery of Art but will be at the National Gallery of Canada (Ottawa) in November and the Museum of Modern Art (New York) next April. 5/6

A Navajo rug representing an AMD processor chip. This weaving has large rectangular regions. The colors include bright red, two shades of blue, and green.
Badibulgator

@kenshirriff This reminds me of this sequence in the Koyaanisqatsi movie where we’re shown aerial views of a city and then…

youtu.be/RSINqSvSVyM?t=350

Giles Goat

@kenshirriff .. this is going to confuse A LOT alien archaeologist species that will come in some millennia to a desert earth and will find "ancient remains" of "human tech" .. and so those legends/rumours/theories will be born ... "Maybe the humans had a knowledge we don't have to create chips using organic materials ?" 😅

[DATA EXPUNGED]
Ken Shirriff

@artandtechnic It must have been an interesting workshop! I see that Marilou Schultz is giving another workshop in October, in Rochester.

Lucienne Kennedy

@kenshirriff @artandtechnic it was an incredibly interesting workshop and I felt really lucky to have the opportunity to attend. Marylou taught it with her sister and we learned how to assemble the upright loom, setup the weft and the basics of weaving.

Roy Brander

@kenshirriff

I went looking for an old Nat.Geog. article that showed Navaho women actually making circuit boards for Fairchild Semiconductor, because they could remember the complex patterns.
But I think that was the 1970s article "The Computer", and what I still have is the 1982 issue on "The Chip", and it contributes this semi-relevant picture.
"Semi", because that's NOT a rug, but a model; it's how they had to review chip designs before you could do CAD zoom-ins.

Passepartout

@kenshirriff I came across this blog post by chance, rapidly emailed it to a bunch of people, and then saw you had a mastodon account so I want to thank you for causing me to email my mother and friends about an interesting thing.

KCRouth 🍻

@kenshirriff
this is so cool. I posted it separately before seeing your posting here. I love reading your articles and following your projects.

seismo!allegra!utzoo

@kenshirriff sure looks like Death Cab for Cutie album cover from 2008.

Rue Mohr

@kenshirriff I remember my 486DX4-100 being much faster than a P1-75. :]
... and my ALU worked properly.

tTh

@kenshirriff : Just a little question : what does TLB mean ?

Ken Shirriff

@tth The TLB is the Translation Lookaside Buffer. It is used for memory management, caching mappings from virtual memory to physical memory.

Ancients

@kenshirriff Has anyone asked the gallery about why it was hung that way, or if they actually know it is backwards?

Ken Shirriff

@ancients I asked the artist who wove the rug to see if the backward pattern was intentional. From her perspective, a Navajo rug doesn't have a front or back, and she didn't realize that it made a difference from a hardware perspective. She didn't think it made sense to contact the museum since it was near the end of the exhibition. But maybe I should contact the next museum.

Hendi

@kenshirriff @ancients please don't spoiler, rather log where it was "right and where it was wrong-sided". Each year at the Christmas market sets up this kind of abomination (inspired by artisanal pyramids driven by the rising gas from candles) and I'm always curious if they attach the electricity right or not, resulting in correct or incorrect rotation.

64 mastodonz logistics co-op

@kenshirriff @ancients filing a technical bug report on a textile display is next-level

Francis 🏴‍☠️ Gulotta

@kenshirriff they don’t have to fix it, but you should totally let them know it’s backwards

Ken Shirriff

@reconbot I sent an email, so we'll see what happens 🙂

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