Connection reset when using DOT_PRODUCT

Help Query Tuning
1

Hey team,

I’m currently tinkering with the vector side of it (awesome, by the way!) and having an issue.

Take my query:

SELECT `title`, `path`, DOT_PRODUCT(embeddings, 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AS Score FROM pages ORDER BY SCORE DESC LIMIT 5

Gets me:

Query 1 ERROR: Leaf Error (127.0.0.1:3307): Error reading from socket. Errno=104 (Connection reset by peer)

UPDATE: Tested on the full singlestore (prod basically) and it works, just doesn’t work on the docker image…

It only seems to be these vector queries, I’m running it from docker (with apple silicon)

2

I don’t know the reason but it could be that our dot_product function is implemented with SIMD and the Intel emulator we use on the docker M1 Mac version of SingleStore cannot handle that.

Has anybody else gotten this to work on Mac M1?

cc: @arnaud

@heychazza consider using our managed service free trial, or an Intel-based machine if you have one available.

3

@heychazza could you add here a small but full repro for that? (create table, insert, select)?

4

This issue seems like a bug in our handling of SIMD instructions when running on M1 Macs using Intel emulation. We are investigating.

5

hey @hanson, thanks for your reply!

I’ve utilised your self-managed solution for the time being, but glad that it’s a bug with Apple Silicon, do you guys know when a proposed fix could be out at all?

R.E. Managed service, I don’t have any credits unfortunately

6

Can you provide a full repro?

7

One of our engineers tested dot_product on the M1 mac setup with vectors of length 1536 like the ones from the popular OpenAI API and it worked fine. So please provide a full repro of the error if you can. Thanks!

8

I’m seeing this same issue on my m1 mac.
create the table:

CREATE TABLE `HS_Stats_Responses` (
  `xEvent` bigint(10) unsigned NOT NULL AUTO_INCREMENT,
  `xResponse` int(11) NOT NULL DEFAULT '0',
  `xRequest` int(11) NOT NULL DEFAULT '0',
  `xPerson` int(11) NOT NULL DEFAULT '0',
  `dtGMTOccured` int(11) NOT NULL DEFAULT '0',
  `noteEmbedding` vector(512, F32),
  PRIMARY KEY (`xEvent`),
  SHARD KEY `__SHARDKEY` (`xEvent`),
  SORT KEY `__UNORDERED` ()
) AUTO_INCREMENT=30818 AUTOSTATS_CARDINALITY_MODE=INCREMENTAL AUTOSTATS_HISTOGRAM_MODE=CREATE AUTOSTATS_SAMPLING=ON SQL_MODE='ONLY_FULL_GROUP_BY,STRICT_ALL_TABLES,NO_AUTO_CREATE_USER';

insert sample data (my dataset is about 30k rows, but just included one example row.

INSERT INTO `HS_Stats_Responses` (`xEvent`, `xResponse`, `xRequest`, `xPerson`, `dtGMTOccured`, `noteEmbedding`)
VALUES
	(4110, 33, 38274, 7, 1271858199, 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query data:

SET @vector = 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select xEvent,noteEmbedding <*> @vector as score from `HS_Stats_Responses` order by score desc limit 1;
9

I’m having this same problem on an M2 chip. I’ve found that the DOT_PRODUCT queries work if i turn off Rosetta emulation on docker, but I need this for the rest of our application to work.

10

I will pass these new examples on to our development team. Sorry for your troubles with this. For now, anybody who hits this please consider using SingleStore Helios or an Intel-compatible machine.

11

Good news. Our patch release this week, 8.5.17, has fixes for these issues. Please let us know if you have any troubles with this on 8.5.17 or later.