piecrust: increase max memory size to 4TiB

Resolves #159
dusk-network · Oct 24, 2023 · d38d4c4 · d38d4c4
1 parent 8129ff7
commit d38d4c4
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Showing 3 changed files with 7 additions and 4 deletions.
diff --git a/piecrust/CHANGELOG.md b/piecrust/CHANGELOG.md
@@ -17,6 +17,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Changed
 
+- Change contract tree to be arity 4 and height 17 [#159]
+- Maximum contract size is now 4TiB [#159]
 - Change `Error::RuntimeError` variant to contain `dusk_wasmtime::Error`,
   and changed `From` implementation
 - Switch runtime from `wasmer` to `wasmtime`
@@ -303,6 +305,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#167]: https://github.com/dusk-network/piecrust/issues/167
 [#166]: https://github.com/dusk-network/piecrust/issues/166
 [#162]: https://github.com/dusk-network/piecrust/issues/162
+[#159]: https://github.com/dusk-network/piecrust/issues/159
 [#158]: https://github.com/dusk-network/piecrust/issues/158
 [#136]: https://github.com/dusk-network/piecrust/issues/136
 [#93]: https://github.com/dusk-network/piecrust/issues/93

diff --git a/piecrust/src/store/memory.rs b/piecrust/src/store/memory.rs
@@ -16,7 +16,7 @@ use crumbles::{LocateFile, Mmap};
 use dusk_wasmtime::LinearMemory;
 
 pub const PAGE_SIZE: usize = 0x10000;
-const WASM_MAX_PAGES: u32 = 0x10000;
+const WASM_MAX_PAGES: u32 = 0x4000000;
 
 const MIN_PAGES: usize = 4;
 const MIN_MEM_SIZE: usize = MIN_PAGES * PAGE_SIZE;

diff --git a/piecrust/src/store/tree.rs b/piecrust/src/store/tree.rs
@@ -12,9 +12,9 @@ use rkyv::{Archive, Deserialize, Serialize};
 
 use crate::store::memory::Memory;
 
-// There are `2^16` pages in a memory
-const P_HEIGHT: usize = 16;
-const P_ARITY: usize = 2;
+// There are max `2^26` pages in a memory
+const P_HEIGHT: usize = 13;
+const P_ARITY: usize = 4;
 
 pub type PageTree = dusk_merkle::Tree<Hash, P_HEIGHT, P_ARITY>;