When I ran forge command with zksync flag, solc consumed a huge memory in large project

[wshino]

Component

Forge

Have you ensured that all of these are up to date?

• Foundry
• Foundryup

What version of Foundry are you on?

forge 0.0.2 (6e1c282 2024-07-03T00:22:11.972797000Z)

What command(s) is the bug in?

forge script script/DeployEmailRecoveryModule.s.sol:DeployEmailRecoveryModuleScript --zksync --rpc-url $ZKSYNC_SEPOLIA_RPC_URL --broadcast -vvvv

Operating System

macOS (Apple Silicon)

Describe the bug

It's related to this issue #378

forge build --zksync in our repo, It took an hour and 15 minutes.
But this is not the only problem.

When I ran some deployment script, I saw the solc allocated huge memory(I saw solc consumed 28GB).
So I couldn't run the deployment script in my local.
Is there any work-around way?
Actually the current solution I may need to use some instance with more memory.

[Karrq]

Hey thanks for the report.
Unfortuantely, this is somewhat expected: as you guessed this is indeed related to #378 (but we have forgotten to update the issue), and high memory consumption was one of the things we have observed also (with similar compilation time, I reached more than 50GB in total, but macOS managed to keep my laptop alive).

Luckily the solution is simple: update to zksolc 1.5.0 and solc 0.8.26.
zksolc 1.5.0 brought a lot of improvement on memory usage and compilation time, and solc 0.8.26 provided significant speedup for the Yul pipeline (which is in use by zksolc).

[wshino]

Thank you so much.
Actually I have no longer need to deploy the above repo to zksync mainnet/sepolia right now, but I believe this solution will be able to fix the problems.

[Karrq]

We added support for zksolc 1.5.1 in #487, which brings the most memory and speed improvements to date :)