How to increase compute_budget?

Question

I want to increase compute budget, but I got following error message. How to add compute_budget instruction ?

Rust

    let payer = &Keypair::from_base58_string("*******************");
    let rpc = RpcClient::new("https://ssc-dao.genesysgo.net".to_string());
    let budget_instr = ComputeBudgetInstruction::set_compute_unit_limit(1_400_000);
    let recent_blockhash = rpc.get_latest_blockhash()?;
    let message = Message::new(&[budget_instr], Some(&payer.pubkey()));
    let txn = Transaction::new(&[payer], message, recent_blockhash);
    let signature = rpc.send_and_confirm_transaction(&txn);
    match signature {
        Ok(sig) => println!("send tx.{:?}", sig),
        Err(err) => println!("error: {:?}", err),
    }
    Ok(())

Error message

error: ClientError { request: Some(SendTransaction), kind: RpcError(RpcResponseError
 { code: -32002, message: "Transaction simulation failed: Error processing Instruction 0:
 invalid instruction data", data: SendTransactionPreflightFailure(RpcSimulateTransactionResult 
{ err: Some(InstructionError(0, InvalidInstructionData)), logs: Some([]), accounts: None,
 units_consumed: Some(0), return_data: None }) }) }

After all, I fixed forcefully like this, refferring someone's tx. it works well.

Rust

#[derive(Debug, PartialEq, Eq, Clone, BorshSerialize, BorshDeserialize)]
pub struct ComputeBudgetInstruction {
    buffer: u8,
    limit: u32,
    price: u32,
}

pub fn budget_instruction() -> Instruction {
    let budget_id = Pubkey::from_str("ComputeBudget111111111111111111111111111111").unwrap();
    let data = ComputeBudgetInstruction {
        buffer: 0,
        limit: 1_400_000,
        price: 1,
    };
    Instruction::new_with_borsh(budget_id, &data, vec![])
}

#[tokio::main]
async fn main() -> Result<(), Error> {

.....

    let payer = &Keypair::from_base58_string("*******************");
    let rpc = RpcClient::new("https://ssc-dao.genesysgo.net".to_string());
    let budget_instr = budget_instruction();
    let main_instr = ......;
    let recent_blockhash = rpc.get_latest_blockhash()?;
    let message = Message::new(&[budget_instr, main_instr], Some(&payer.pubkey()));
    let txn = Transaction::new(&[payer], message, recent_blockhash);
    let signature = rpc.send_and_confirm_transaction(&txn);
    match signature {
        Ok(sig) => println!("send tx.{:?}", sig),
        Err(err) => println!("error: {:?}", err),
    }
    Ok(())

solana docs about compute-budget

https://docs.solana.com/developing/programming-model/runtime#compute-budget

Answer 1

try using this inplace of set_compute_limit ComputeBudgetInstruction::RequestUnitsDeprecated(1_400_000u32);